From Latin -ire.
-ire
- used, with a stem, to form the infinitive of some Italian verbs
- There are two groups of regular -ire verbs, one of which inserts isc between the stem and ending in the present tenses and in the imperative. these form the great majority of regular -ire verbs
- See finire and dormire as examples of the conjugation of -ire verbs do and do not insert isc respectively
- The verb dire does not count, being technically an irregular second conjugation verb whose "normal" base is dic-. Fare (to do), has a similar phenomenon.
(with -isc- form)
(without -isc- form)
- -ire verbs that do not insert isc
- -ire verbs that can be used with or without insertion of isc
- Irregular -ire verbs
- Italian Grammar Handbook, Aust, D., 1994, Berlitz Publishing Co., Ltd.
From Proto-Italic *-jezi, in which z changed into r due to rhotacism. Formed by analogy with -ere.
-īre
- present active infinitive of -iō (fourth conjugation)