Épaissir is a french second group verb. So it follow the regular conjugation pattern of the second group like:
conjugation rules and endings for the second group verbs.
Épaissir is conjugated the same way that verbs that end in :
-ir. The prototypical verb for the second conjugation is
finir. The conjugation is, marked by the vowel
i and the infix
-iss- in the indicative present and imperfect.
Épaissir verb is conjugated in negative form. The placement of the negative adverb follow the following rules:
- the adverb
« ne » is placed after the pronoun and before the verb.
- in simple tenses, the adverbs (
« ne ...pas »,
« ne...plus »,
« ne...jamais », etc...) surround the verb
épaissir.
- in compound tenses or in ive voice, the negative adverbs surround the auxiliary.