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