Anéantir belong to the 2nd
group. Anéantir is a common french verb.
Anéantir is conjugated the same way that verbs that end in : -ir
Anéantir is conjugated with auxiliary avoir
Anéantir verb is
French verb anéantir can be conjugated in the reflexive form: S'anéantir
verb is a direct transitive verb, so passive voice can be used.