天才

Japanese Slang Japanese ★★★★★ 5/5 casual てんさいtensai
読み てんさい
ローマ字 tensai
漢字の分解 天 (heaven) + 才 (talent) → heaven-sent talent/genius
発音 /teɴ.sa.i/

意味

Genius — used as enthusiastic praise for someone who does something clever, creative, or impressively skilled.

While 天才 literally means 'genius,' in casual speech it has become an exaggerated compliment for anyone who does something impressively clever or creative, even small everyday things like finding a life hack or making a great meal from leftovers. It is often used semi-ironically with a tone of delighted surprise. The gap between 'actual genius' and 'clever friend' makes it a fun, hyperbolic compliment.

例文

  1. この解き方思いついたの?お前天才だろ。
  2. あのパスは天才的だった。見てて鳥肌立ったわ。
  3. 冷蔵庫の残り物でこれ作ったの?天才じゃん。

使い方ガイド

場面: friends, social media, reactions

トーン: impressed, playfully hyperbolic

正しい言い方

  • そのアイデア天才すぎる (That idea is pure genius)
  • 天才か?って思うくらいうまい (They're so good you'd think they were a genius)

避ける言い方

  • 皮肉で「天才だね」と言うと嫌味に聞こえる (Saying 'tensai da ne' sarcastically sounds mean-spirited — tone matters)

よくある間違い

  • Taking 天才 too literally — in casual speech it is hyperbolic praise, not a clinical assessment
  • Using 天才 sarcastically without clear tonal cues — it can easily sound like genuine praise or mockery

起源と歴史

Standard Japanese word meaning 'heaven-sent talent' (天 heaven + 才 talent). Its hyperbolic casual usage as a compliment for everyday cleverness has been common for decades.

文化的背景

時代: Traditional word, casual hyperbolic usage common for decades

世代: All ages

社会的背景: Universal

地域メモ: Used across all of Japan. In internet culture, 天才 and 天才か? (Are you a genius?) are common reactions to clever posts or plays. Often combined with じゃん for friendly emphasis: 天才じゃん!

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