Conjugation of french verb authentifier in interrogative form

Authentifier in passive voice Authentifier in female form Ne pas authentifier Remove the ?

Authentifier belong to the 1^st group.
Authentifier is conjugated the same way that verbs that end in : -ier
Authentifier is conjugated with auxiliary avoir.
Authentifier verb is direct transitive.
Authentifier verb is a direct transitive verb, so passive voice can be used.

Authentifier is a french first group verb. So it follow the regular conjugation pattern of the first group like: aimer. Follow this link to see all the endings of the conjugation of the first group verbs : conjugation rules and endings for the first group verbs.

However, although the terminations are perfectly regular, stem can be irregular and have numerous variations.
Authentifier is conjugated the same way that verbs that end in : -ier.

Authentifier verb is conjugated in interrogative form. For sound reasons, an euphonious « t » is added to the pronoun of the third person: « il », « elle », « on », « ils », « elles » except when the verb ends with « t » or « d »: « authentifie-t-il ? », « authentifia-t-il ? », « authentifiera-t-il ? », « a-t-il authentifié ? », « aura-t-il authentifié ? ».
Always in interrogative form, and always for sound reasons, an accent appears in first person present indicative tense when the verb ends with « e ». An euphonious « e » is replaced by « é »: « authentifié-je ? ».
Finally, the interrogative form does not exist in subjunctive and imperative.

1. Authentifier conjugation
2. Authentifier french verb conjugation rules
3. Authentifier conjugation in indicative
4. Authentifier conjugation in subjunctive
5. Authentifier conjugation in conditional
6. Authentifier conjugation in imperative
7. Authentifier french synonyms
8. Authentifier verb gerondives
9. Authentifier conjugation in all forms
10. Authentifier conjugation in all tenses
11. Authentifier similar verbs conjugation
12. Common french verbs

This is the list of authentifier french verb synonyms :

Here is the full list of verbs sharing the same verb conjugation :

List of verbs used as patterns in french conjugation:

French Auxiliaries Verbs

Most common first group verbs

Most common second group verbs

Most common third group verbs