An inchoative verb, sometimes called an "inceptive" verb, shows a process of beginning or becoming. Productive inchoative affixes exist in several languages, including the suffixes present in Latin and Ancient Greek, and consequently some Romance languages. Not all verbs with inchoative suffixes have retained their inceptive meaning. In Italian, for example, present indicativefinisco 'I finish' contains the form of the suffix, while present indicative finiamo 'we finish' does not, yet the only difference in meaning is that of person subject; the suffix is now semantically inert.
The Latin language uses the suffix -sc- to show inchoative force. The suffix is normally seen in the present tense stem, and is not present in the third and fourth principal parts.
apiscor, apiscī, aptus sum reach
crescō, crescere, crēvī, crētus come into being, grow up
nanciscor, nanciscī, nactus/nanctus sum to meet with, stumble upon
nascor, nasci, natus sum to be begotten, to be generated, to be born, as life
noscō, noscere, nōvī, nōtus get to know
obdormiscō, obdormiscere, obdormīvī, obdormītus sum fall asleep
poscō, poscere, poposcī demand
proficiscor, proficiscī, profectus sum set out
rubescō, rubescere, rubuī to grow red, redden
Catalan
In Catalan, the 3rd verb category is divided into 2 sub-categories: ‘pure’ and ‘inchoative’. The vast majority of 3rd category verbs are inchoative and are marked by the addition of the affix ‘-esc-, -eix-‘, with less than only 15 to 20 of all 3rd category verbs falling into the ‘pure’ sub-category. Inchoative verbs are affected in only their first, second, third and third person plural conjugations. This can be seen below in the table below comparing the present indicative conjugations of the pure verb ‘dormir’ with the inchoative verb ‘servir’ :
It is important to note that as nearly all of the 3rd category verbs are inchoative. There is very little, if any, relationship between the inchoative verbs of Catalan and the traditional inceptive meaning and function of inchoative verbs; it is most likely that this verb sub-category is named ‘inchoative’ because the associated morpheme ‘-eix-‘ stems directly from the Latin inchoative morpheme ‘-sc-‘, despite its function and usage having disappeared.
Ancient Greek
Greek also uses the inchoative suffix -sk-, although it does not always indicate inchoative meaning. -sk- is added to verb-stems ending in vowels, -isk- to consonant stems.
An alternative form is of this vaaleta, hiljetä, etc. Not all inchoatives are marked like this, however, e.g.
kuolla "to die"
The translative case marks "becoming something" on the noun. Thus, if a target state is specific, it is placed in the translative case, e.g. lehti vaalenee keltaiseksi "the leaf pales to yellow". The transformation from a state is marked with the elative case. For example, lehti vaalenee tummanvihreästä keltaiseksi "the leaf pales from dark green to yellow". In eastern Karelian dialects the exessive case is found; it specifically refers to inchoative changes.
ամչնալ "to be shamed, become ashamed" < ամօթ "shame"
In Western Armenian, the penultimate vowel tends to weaken or drop out, so the -անալ suffix is more commonly -նալ, sometimes pronounced -ընալ. Inchoatives are considered part of the third verb conjugation, but they form a special category because the infix drops in the past tense; while regular third conjugation verbs add ց to the present stem, for the inchoatives the ց appears in the place of the dropped ն.
կարդալ "to read" > կարդացաւ "he read"
սպիտականալ "to become white" > սպիտակացաւ not *սպիտականացաւ "it became white"
The infix generally retains its inchoative meaning in modern usage, although sometimes the verbs are translated to other languages as simple verbs because the inchoative meaning requires a compound that may be awkward or unnatural in a language that lacks this aspect.. This convention does not extend as broadly to the past tenses, where the aorist past has to be translated as an inceptive verb in order to distinguish it from imperfect tenses It remains a very productive grammatical feature, and almost any adjective and some nouns can be made inchoative verbs simply by the addition of the suffix -անալ / -նալ.
արագ "quick, fast" > արագանալ "to speed up, become fast"
բարկ "furious" > բարկանալ "to get angry"
կոյր "blind" > կուրանալ, կոյրնալ "to become blind"
անօթի "hungry" > անօթենալ "to become hungry"
տաք "hot" > տաքանալ, տաքնալ "to get hot"
արթուն "awake" > արթնանալ, արթննալ "to wake up, become alert"
քար "rock" > քարանալ "to harden, petrify"
ծանօթ "friend, acquaintance" > ծանօթանալ "to meet, get to know"
There are verbs that have a similar form to the inchoative verbs but are different. The similarity may be derived from the similar sounding but grammatically different verbal ending -ենալ, especially in Western Armenian dialects, where dropping the weak penultimate vowel merges -ենալ and -անալ into -նալ. In other cases, the ն derives from an irregular root that belongs to the third conjugation or was subsumed into the third conjugation because of phonetic similarity. The latter category can be recognized by the irregular past tense forms that drop the ն.
The Germanic languages historically formed inchoative verbs with the suffix -n-. Verbs derived with this suffix belonged to the distinct fourth class of weak verbs in Gothic, while in most other Germanic languages they belonged to the second weak class. The suffix survives in English as -en, and is still somewhat productive although there are other suffixes such as -ify which compete with it. However, verbs with this suffix are now primarily ergatives, and also have a causative sense when used transitively. Some examples:
dark > darken
white > whiten
hard > harden
thick > thicken
Swedish also retains use of the suffix, which is still somewhat productive. Some examples: