IPA: /ˈhɛlp.fəl.nəs/
KK: /ˈhɛlpfəl.nəs/
The quality of being useful or providing assistance to others.
Her helpfulness made a big difference in the community.
Helpfulness → It is formed from "help" (from Old English *helpan*, meaning to assist or aid) and "-fulness" (meaning the state of being full of). The word "helpfulness" means the state of being full of help or assistance.
Think of being 'full of help' — 'help' means to assist, and '-fulness' indicates a state of being. This helps you remember that helpfulness is all about being ready to assist others.