Défier belong to the 1
st group. Défier is a common french verb.
Défier is conjugated the same way that verbs that end in :
-ier
Défier is conjugated with
auxiliary avoir.
Défier verb is
direct transitive.
French verb défier can be conjugated in the reflexive form:
Se défier
Défier verb is a direct transitive verb, so passive voice can be used.