Tonifier belong to the 1st group.
Tonifier is conjugated the same way that verbs that end in : -ier
Tonifier is conjugated with auxiliary avoir.
Tonifier verb is
direct transitive. Tonifier 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.
Tonifier is conjugated the same way that verbs that end in : -ier.