ちからぶそく 力不足 LinksSentence search for 力不足Sentence search for ちからぶそくKanji details for 力, 不 and 足Edit in JMdict Noun, Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi)1. lack of ability; inadequacy; (being) out of one's depth Discussions Log in to talk about this word.