Adjective has 2 senses

• collegial(a = adj.pert) - characterized by or having authority vested equally among colleagues; "a tendency to turn from collegial to one-man management"; "collegial harmony"
Derived form noun colleague₁

• collegial(a = adj.pert) collegiate - of or resembling or typical of a college or college students; "collegiate attitudes"; "collegiate clothes"; "collegiate living"
Derived form noun college₁, noun college₂, noun college₃