IPA: /fərˈɡɛt.fəl/
KK: /fərˈɡɛt̬.fəl/
Having a tendency to forget things or not remember important information.
She is often forgetful and sometimes misplaces her keys.
Comparative: more forgetful
Superlative: most forgetful
Forgetful → It is formed from "forget" (from Old English *forgietan*, meaning to lose the memory of) and "-ful" (meaning full of). The word "forgetful" means full of forgetfulness or prone to forgetting.
Think of someone who is 'full of' forgetfulness — 'forget' means to lose memory, and '-ful' indicates being full of that quality.