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This page pertains to UD version 2.

VerbForm: form of verb or deverbative

Values: Conv Fin Ger Gdv Inf Part Sup Vnoun

[NB: This page is till partly work in progress]

This morphological feature represents a coarse classification of verbal forms based on the presence or absence of given grammatical categories and their respectively expressed values. It is also used for forms which are no longer identified as VERBs, but originated as verbal forms.

In Latin, the first, fundamental distinction is between so-called finite and non-finite verbal forms: the former express the categories of time, mood and person, while the latter do not. This distinction is also reflected by the fact that, while finite forms use two main specific sets of endings divided into subgroups defined by thematic vowels (traditionally called conjugations), non-finite forms share the same paradigms of nominal elements (traditionally called declensions), befitting their syntactic behaviour.

Non-finite verbal forms are further traditionally subdivided into participles (three types), gerundives, gerunds, infinitives and supines, according to the inflectional paradigms they follow, the typical syntactic functions they fulfill in a clause, and some semantic nuances. Taking into account also finite forms, one might see a more general gradation from more definite and predicate-like forms, expressing both an aspect of the predication and an agreement (in person, number and/or case) with a given argument (most prototypically a subject), down to more indefinite and noun-like forms (e.g. the “passive” supine), which are sometimes hardly any longer distinguishable from other deverbal nouns, apart from the fact that their formation might be synchronically productive, considered to be part of a verb’s paradigm and/or regularly used as an element or argument in complex predicative constructions (see Note 1 for further analysis of VerbForm denominations). We note that, since in Latin the auxiliary verb(s) effectively are verbs from a morphological point of view (possibly with the only difference of sum ‘to be’ not being eligible for a voice), the discussion of this feature also applies to AUX integrally; in this section, “verb” has to be intended in a morphological sense.

In Latin, every different value of VerbForm corresponds to a different and unique combination of morphological features taken from among aspect, case, gender, mood, number, person, tense, voice, and possibly degree, assigned to a verbal stem by means of one or more fusional inflective suffixes and sometimes following constraints of a semantical nature (e.g. with regard to the possibility of expressing a passive diathesis). This actually makes the VerbForm feature redundant per se when annotated on verbal forms, but it still acts as a useful synthesis of all the aforementioned characteristics and the observed syntactic role.

This feature is also marked on words of deverbative origin, irrespective of their synchronic parts of speech. When this happens, i.e. when VerbForm is applied to a word with part of speech different than VERB, this feature has to be intended in an etymological sense: the shift in morphosyntax and semantics might already have sensibly progressed. The most typical case, and where the line is most often still blurred, is that of adjectives (ADJ) of a participial (VerbForm=Part) origin.

Conv: converb (verbal adverb; traditionally “active supine”)

[To be completed]


Fin: so-called finite forms

Finite forms in Latin express (apart from aspect) tense, mood and voice, and agree in person and number with their syntactic subject, and only with it. While all these grammatical categories are represented by fusive (i.e. condensing more categories into one single form, e.g. -s = 2nd person singular active, -ba- = past indicative) suffixes with particular combination rules (e.g. -ba- is only used for imperfective stems, i.e. bare stems with thematic vowel) which make them appear as complex independent suffixes (e.g. -bas = 2nd person singular active past indicative), aspect, especially perfective, can also be conveyed by an alteration of the stem by other means (e.g. fec-, perfective stem of facio ‘to make’).

In Latin, only finite forms of verbs can function as roots of independent clauses or sentences without being part of an (elliptic) copular construction. In fact, a finite form is not compatible with a copula. Periphrastic verbal constructions using a copula always accompany it with a non-finite form: while the former expresses tense, mood, person and number, the latter asserts aspect and voice.

Verbal finite forms variate between past/present/future for tense, indicative/subjunctive/imperative for mood, active/passive for voice, and imperfective/inchoative/perfective for aspect; there are no synthetic prospective forms. They agree with subjects with regard to the 1st/2nd/3rd person and singular/plural number.

Mood: Tense / Aspect Imperfective (Inchoative) Perfective Prospective
Indicative: past amabam / amabar amascebam / amascebar amaueram / - - / -
Indicative: present amo / amor amasco / amascor amaui / - - / -
Indicative: future amabo / amabor amascam / amascar amauero / - - / -
Subjunctive: past amarem / amarer amascerem / amascerer amauissem / - - / -
Subjunctive: present amem / amer amascam / amascar amauerim / - - / -
Subjunctive: future - / - - / - - / - - / -
Imperative: past - / - - / - - / - - / -
**Imperative: present ** ama / amare amasce / amascere - / - - / -
Imperative: future amato / amator amascito / amascitor - / - - / -

Some combinations with respect to aspect and voice are not expressed by a single (i.e. synthetic) finite form, and instead require periphrastic constructions; some others are not expressed at all, like a theoretically possible, but never occurring, perfective present imperative or future subjunctive (these latter gaps are probably determined by semantic constraints). On the other hand, some of the synchronically synthetic finite forms like amauero are derived from the grammaticalisation of the copula (here ero ‘I will be’) into an inflectional suffix applied to the perfective stem.

A very common occurrence for a deverbative word based on a finite form is a conjunction of either kind (CCONJ or SCONJ), arising as the grammaticalisation of a paratactic insertion before another finite clause.


Ger: gerund (deprecated)

The gerund is morphologically identical with the gerundive (see below and Note 1) and thus the use of this value for the VerbForm feature should be considered to be deprecated, as it is in UD already for its being terminologically misleading. The value Gdv (or VNoun, see Note 1), and thus Part, should be used instead in all occurrences.

We notice that the traditional terminological and conceptual distinction between gerund and gerundive is based on a possible observed variation in syntactic behaviour: in certain contexts, the gerundive form, even of non-deponent/intransitive verbs, seems to behave following an active diathesis (and transitive syntax), and not a passive one as expected (cf. Miller 2000). Further, a gerundive form can allegedly appear as the head of its (non-finite) clause without agreeing with the supposed subject in number and case (as is the case in the absolute constructions), but staying in the neuter singular (of impersonal type; cf. Haspelmath 1987). It is not entirely clear how much this would represent an early stage of the language, but, in later stages, a tendency towards an active reinterpretation of gerunds/gerundives can be seen, up to its clearly active diathesis in some modern Romance languages (e.g. Italian leggendo un libro ho imparato molte cose ‘I have learnt many things by reading a book’, where it. leggendo (invariable) = lat. legendo, ablative from legendum < lego ‘to read’). It has to be noted that the actual voice is not always easily assessed in such constructions, and sometimes this is not even possible.

Finally, since the difference between traditional gerunds and gerundives is possibly represented at a syntactic (e.g. presence of obj relation), and not morphological level, only the value Gdv (or better Part, see voice) should be retained (and even that could be simplified, see Note 1).


Gdv: gerundive (participial subtype)

The gerundive form (including therein the traditional denomination of gerund) is a participial form (see entry for Part) and, as such, apart from aspect, it expresses voice and agrees with a given nominal element in number, gender and case. As a participle, it can also vary in degree. It is characterised by the infix -nd-, coming after the thematic vowel and before the nominal suffix of the first/second declension bearing number/gender/case (therefore, the denomination “nd-form” also exists).

The gerundive is more specifically considered a passive participle, sometimes referred to as the future passive participle, where “future” actually has to be intended in an aspectual sense, precisely as the prospective aspect (expressing the relative imminence of an action/state/event, not an absolute time reference). Like for the morphological passive voice, it can be used also with normally intransitive verbs in an impersonal sense; however, under certain circumstances (and more so in later stages of the language) the gerundive form seems to also gain an active reading and syntax (cf. Miller 2000, Haspelmath 1987), blurring the line between gerundive and (active) future/present participle. A diachronic analogy can be seen between this development and the phenomenon of deponent verbs (i.e. verbs with passive morphology but active syntax/meaning); the view held by traditional grammars of the neuter gerundive as an “inflected equivalent” of the infinitive in certain contexts might be considered the acknowledgment of such a development in its final stage. Nevertheless, on the morphological level gerundive forms are always marked with Voice=Pass, exactly like deponent verbs; possible shifts are left for interpretation from the syntactic annotation. This reflects the linguistic system that we can observe in written documents at our disposal, which does not necessarily let a possibly different vernacular use of the language show through.

The origins of the nd-form are not entirely clear and are part of the problem: beyond the exact morphological derivation history, opinions vary as to whether the participial gerundive is a generalisation of a former verbal noun (i.e. the gerund), or if the “infinitival” use of gerundive forms is a later specialisation. The latter currently appears, especially from typological, morphological and diachronic points of view, as the most probable hypothesis.

The gerundive is often seen as the predicative element of absolute constructions or verbal complements (where it undisputably retains its passive diathesis and makes up for the lack of a passive imperfective participle in Latin) and also appears in a “necessitative” periphrastic construction together with the copula sum ‘to be’. In the latter, the prospective aspect assumes a modal nuance of inevitability, and as such of something that “has to” happen.


Inf: infinitive (verbal noun)

The infinitive is a particular verbal noun which is characterised by an absence of inflection and, beyond aspect, only expresses voice. It never agrees with any possible subject. It is marked by a -re/ri suffix (originally -se, as still in esse ‘to be’, and sometimes assimilated as in uelle ‘to want’), which is adjoined to the stem after the thematic vowel (if any) and can appear as -i for the passive voice of athematic stems.

The (morphological) voice of the infinitive can be either active or passive, and the aspect can vary between imperfective or perfective. A prospective aspect ending in -ssere is sparingly attested (e.g. reconciliassere ‘to be going to recover’, Pl. Capt. 1.2) and probably represents an archaic trait, lost in subsequent Latinity. Beyond that, such a formation coincides with the imperfective infinitive of desiderative verbs, e.g. capessere from capesso ‘to want to seize, to seize eagerly’ wrt. capio ‘to seize’: the interplay between future/prospective and desiderative meanings, which is also seen in some sigmatic future indicative perfective formations (e.g. capso, from capio, related to capesso) and in couples like esurio (desiderative) / esurus (future participle, see entry below), from edo ‘to eat’, makes an aspectual interpretation not entirely transparent.

The origin of the Latin infinitive seems to lie in the crystallised dative/locative inflected form of a now lost deverbative noun (a nearly identical development is seen for other Indo-European languages, too). The distribution of the Latin infinitive appears specialised in the core arguments, so it is mostly observed to act either as head predicate of a clausal subject, or as head predicate of an open/closed clausal complement (the difference seemingly determined by the semantics of the “main” verb), i.e. as object of the main predicate (or, equivalently, of a deverbative noun). When heading an open clausal complement, the infinitive can take an explicit subject which then appears in the accusative case, but there is still no agreement, unless the infinitive is expressed periphrastically (see below). The spreading of accusative between predicate and subject is reminiscent of absolute constructions. Conversely, the possible subject of an infinitival subject clause can stay in the nominative case. The infinitive cannot occur as head of a non-core argument: in that case, a participial form (including traditionally so-called gerundive/gerund), capable of inflection and agreement, needs to be employed. Another, more marginal use of the infinitive is as the predicate of independent clauses in narrative contexts, the so-called “historical infintive”: there, the action is presented in a more vivid and fluid way by leaving only the imperfective aspect and forgoing all other grammatical categories (i.e. tense, mood and person/number agreement). Finally, another marginal use is as an equivalent of the imperative, a use often observed also in many living languages today.

The fact that the infinitive form almost only occurs in core arguments and is invariable makes it natural for it to be interpreted as a neuter noun, when it appears embedded in a nominal context like hoc ipsum nihil agere ‘this same nothing-doing’ (Cic. de Orat. 2.24). However, this is a kind of default, “external” agreement which is not morphologically present in the infinitive form itself, so that it is better never annotated with Gender=Neut, and consequent Number=Sing and Case=Acc|Nom: as already stated, these grammatical categories are not pertinent to the infinitive form.

Voice / Aspect Imperfective (Inchoative) Perfective *Prospective
Active amare amascere amauisse *amassere / -
Passive amari / amarier ?amasceri - ?amasseri / -

From the scheme it appears that Latin has no synthetic form for a passive perfect infinitive, for which it resorts to the periphrastic construction amatus esse. The same is valid for the prospective aspect, where the construction amaturus esse regularly expresses it in Classical Latin for the active diathesis, while a more complex construction of the type of amatum iri is attested to express the passive diathesis, making use of the supine (a converb; see entry for Sup) and the passive imperfective infinitive of the intransitive eo ‘to go’ in impersonal function, so literally ‘to be there a going for loving’. This construction is an unicum: the verb eo is nowhere else used in this auxiliary function in Latin.

Since the infinitive is already a (verbal) noun and acts as such, it is difficult to find cases where an actual verbal interpretation is no longer possible and a truly nominal one (i.e. NOUN) is needed or justified: a common candidate may be esse, from the auxiliary sum, in the sense of ‘being’ rather than ‘to be’, but here, too, expressions like esse bonus ‘the being good’ are observed, where esse fully retains its use as a verbal copula. On the other hand, some Romance languages have formalised the nounness of such forms inserting them in a nominal paradigm, e.g. it. essere ‘being’, pl. esseri (and the nominal esseri buoni ‘good beings’ contrasts with the predicative essere buoni ‘to be good (pl.)’).


Part: participle (verbal adjective)

[To be completed]

Voice/Aspect Imperfective (Inchoative) Perfective Prospective
Active amans amascens - amaturus
Passive - - amatus amandus


Sup: supine

[To be completed]

The supine appears as a verbal noun which does not show agreement with other arguments in the clause: it is (originally) a noun of fixed masculine gender following the inflectional paradigm of the fourth declension. What are canonically considered the forms of the supine are the singular accusative and ablative cases of such a noun. It is characterised by the infix -s/t- applied to the stem + thematic vowel (with same variations as for the perfect participle), followed by the inflectional ending.

With respect to the other verb forms, the supine is an outlier in that it does not have any attributive function expressed by any morphological agreement by means of person/number/gender/case like a participle, nor does it appears as the core argument of a clause like the infinitive. In fact, from a morphological point of view, it is not at all distinguishable from regularly formed masculine, fourth-declension abstract deverbal nouns, e.g. auditus ‘a hearing; the sense of hearing’ from audio ‘to hear, listen’ or cantus ‘a singing; song’ from cano ‘to sing’.

From a syntactic point of view, in traditional grammars a difference is made between “passive” and “active” supine, the former being in the (singular) ablative case and the latter in the (singular) accusative. Actually, there are also occurrences identified as supines and in the dative case (see Examples), and, widening the field to all similar abstract deverbal names, there is no limitation to case nor number in their inflection. However, what is usually identified as the “active” supine does show some verbal syntax (in particular, the possibility to have an object argument in the accusative), and appears as a crystallised form of the aforementioned original fourth-declension nominal paradigm: this, together with its syntactic distribution, actually concurs to considering it a converb (see entry for Conv).

Case Singular
Nominative amatŭs
Genitive amatūs
Dative amatui
Accusative amatŭm
Vocative amatŭs
Ablative amatū


Vnoun: verbal noun

[To be completed]


Note 1: rationalisation of Latin VerbForms with regard to universality

[To be completed; refer to article (Cecchini, 2021).]

Note 2: when is a word no longer a verb?

[To be completed]


VerbForm in other languages: [ab] [abq] [akk] [bej] [bg] [bm] [cs] [cu] [cy] [el] [eme] [en] [es] [fi] [fr] [ga] [gub] [gun] [hbo] [hu] [hy] [it] [ka] [kpv] [ky] [la] [mdf] [myv] [orv] [pcm] [qpm] [ru] [sl] [sv] [tr] [tt] [u] [uk] [urj]