Refroidir belong to the 2
nd group. Refroidir is a common french verb.
Refroidir is conjugated the same way that verbs that end in :
-ir
Refroidir is conjugated with
auxiliary avoir.
Refroidir verb is
direct transitive, intransitive.
French verb refroidir can be conjugated in the reflexive form:
Se refroidir
Refroidir verb is a direct transitive verb, so passive voice can be used.