whole-heart ‧ ed /ˌhəʊl ˈhɑːtəd◂ $ ˌhoʊlˈhɑːr-/ BrE AmE adjective [usually before noun]
involving all your feelings, interest etc
whole-hearted support/acceptance/cooperation etc
Montgomery’s new style of leadership met with Leslie’s whole-hearted approval.
—whole-heartedly adverb :
I agree whole-heartedly with the mayor on this issue.