Endormir belong to the 3
rd group. Endormir is a common french verb.
Endormir is conjugated the same way that verbs that end in :
-mir
Endormir is conjugated with
auxiliary avoir.
Endormir verb is
direct transitive.
French verb endormir can be conjugated in the reflexive form:
S'endormir
Endormir verb is a direct transitive verb, so passive voice can be used.