How to say "know-it-all" in Japanese
Choosing the right word
- 知ったかぶり屋しったかぶりやno-adjectiveA less common word for the know-it-all who habitually pretends to know things they do not: someone who confidently explains or corrects others on subjects they actually understand poorly.
- 酢豆腐すどうふnounAlso less common; it derides a self-proclaimed expert whose knowledge is only superficial, someone who holds forth confidently from a shallow smattering of learning — a mocking word for the half-informed know-it-all.
For 'know-it-all', choose 「知ったかぶり屋」 for someone who pretends to know things they don't, and 酢豆腐 for a self-proclaimed expert whose knowledge is only superficial; both are less common words.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
