3rd Conjugation -io Verbs

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188. Verbs of the 3rd Conjugation in -iō have certain forms of the Present stem like the 4th conjugation. They lose the i of the stem before a consonant and also before ĭ, ī, and ĕ (except in the Future, the Participle, the Gerund, and the Gerundive).1 Verbs of this class are conjugated as follows.

3rd Conjugation in -iō Present paradigm

3rd Conjugation in -iō Imperfect paradigm

3rd Conjugation in -iō Future paradigm

3rd Conjugation in -iō Perfect paradigm

3rd Conjugation in -iō Pluperfect paradigm

3rd Conjugation in -iō Future Perfect paradigm


1. This is a practical working rule. The actual explanation of the forms of such verbs is not fully understood.

Suggested Citation

Meagan Ayer, Allen and Greenough’s New Latin Grammar for Schools and Colleges. Carlisle, Pennsylvania: Dickinson College Commentaries, 2014. ISBN: 978-1-947822-04-7. https://dcc.dickinson.edu/grammar/latin/3rd-conjugation-io-verbs