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