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