Rajeunir belong to the 2
nd group. Rajeunir is a common french verb.
Rajeunir is conjugated the same way that verbs that end in :
-ir
Rajeunir is conjugated with the two auxiliaries
être and
avoir.
Rajeunir verb is
direct transitive, intransitive.
French verb rajeunir can be conjugated in the reflexive form:
Se rajeunir
Rajeunir verb is a direct transitive verb, so passive voice can be used.
Attention: passive voice can only be used when rajeunir verb is conjugated with auxiliary avoir.