Terrifier belong to the 1st group.
Terrifier is conjugated the same way that verbs that end in : -ier
Terrifier is conjugated with auxiliary avoir.
Terrifier verb is
direct transitive. Terrifier verb is a direct transitive verb, so passive voice can be used.
However, although the terminations are perfectly regular, stem can be irregular and have numerous variations.
Terrifier is conjugated the same way that verbs that end in : -ier.