From earlier *coēpī. The present stem coepio is a back-formation.
coepī
coepī (perfect infinitive coepisse, supine coeptum); irregular conjugation, irregular
Defective verb, no present tense conjugations. For a full set of forms, incipiō is often used in its place.
Conjugation of coepī (third conjugation, no present stem) | |||||||
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indicative | singular | plural | |||||
first | second | third | first | second | third | ||
active | perfect | coepī | coepistī | coepit | coepimus | coepistis | coepērunt, coepēre |
pluperfect | coeperam | coeperās | coeperat | coeperāmus | coeperātis | coeperant | |
future perfect | coeperō | coeperis | coeperit | coeperimus | coeperitis | coeperint | |
passive | perfect | coeptus + present active indicative of sum | |||||
pluperfect | coeptus + imperfect active indicative of sum | ||||||
future perfect | coeptus + future active indicative of sum | ||||||
subjunctive | singular | plural | |||||
first | second | third | first | second | third | ||
active | perfect | coeperim | coeperīs | coeperit | coeperīmus | coeperītis | coeperint |
pluperfect | coepissem | coepissēs | coepisset | coepissēmus | coepissētis | coepissent | |
passive | perfect | coeptus + present active subjunctive of sum | |||||
pluperfect | coeptus + imperfect active subjunctive of sum | ||||||
non-finite forms | active | passive | |||||
present | perfect | future | present | perfect | future | ||
infinitives | — | coepisse | coeptūrum esse | — | coeptum esse | coeptum īrī | |
participles | — | — | coeptūrus | — | coeptus | — | |
verbal nouns | gerund | supine | |||||
genitive | dative | accusative | ablative | accusative | ablative | ||
— | — | — | — | coeptum | coeptū |