しじゅうふわく 四十不惑 LinksSentence search for 四十不惑Sentence search for しじゅうふわくKanji details for 四, 十, 不 and 惑Edit in JMdict Expressions (phrases, clauses, etc.)1. at age forty, one has no doubtsYojijukugo (four character compound), from Confucius Discussions Log in to talk about this word.