Affaiblir belong to the 2
nd 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
direct transitive.
French verb affaiblir can be conjugated in the reflexive form:
S'affaiblir
Affaiblir verb is a direct transitive verb, so passive voice can be used.