IPA: /ˈreɪdʒfəl/
KK: /ˈreɪdʒfəl/
Feeling or showing a strong and intense anger.
He became rageful when he heard the unfair news.
Rageful → It is formed from "rage" (from Old French *rage*, meaning intense anger) and "-ful" (meaning full of). The word "rageful" means full of rage or characterized by intense anger.
Think of being 'full of' ('-ful') intense anger ('rage') — that's what rageful means.