Enfreindre belong to the 3rd group. Enfreindre is a common french verb.
Enfreindre is conjugated the same way that verbs that end in : -ndre
Enfreindre is conjugated with auxiliary avoir.
Enfreindre verb is
direct transitive. Enfreindre verb is a direct transitive verb, so passive voice can be used.
Enfreindre is a french third group verb. So, this verb is irregular and do not follow a regular conjugation pattern like first or second group verbs. Follow this link to see all the endings of the conjugation of most of the third group verbs : conjugation rules and endings for the second group verbs.
ENFREINDRE : v. tr. Violer, transgresser, en parlant d'un Traité, d'une loi, d'un privilège, d'une ordonnance, d'une règle, et autres choses semblables. Enfreindre une convention, les conditions d'un traité. Enfreindre un ordre. Enfreindre une prescription. Enfreindre la règle, les règles.