Rajeunir belong to the 2nd
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
Rajeunir verb is
direct transitive, intransitive.
French verb rajeunir can be conjugated in the reflexive form: Se 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.