天才

Japanese Slang Japanese ★★★★★ 5/5 casual てんさいtensai
Reading てんさい
Romaji tensai
Kanji breakdown 天 (heaven) + 才 (talent) → heaven-sent talent/genius
Pronunciation /teɴ.sa.i/

Meaning

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.

Examples

  1. この解き方思いついたの?お前天才だろ。 You came up with this solution? You're a genius.
  2. あのパスは天才的だった。見てて鳥肌立ったわ。 That pass was pure genius. I got chills watching it.
  3. 冷蔵庫の残り物でこれ作ったの?天才じゃん。 You made this from leftovers in the fridge? You're a genius.

Usage Guide

Context: friends, social media, reactions

Tone: impressed, playfully hyperbolic

Do Say

  • 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)

Don't Say

  • 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)

Common Mistakes

  • 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

Origin & History

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.

Cultural Context

Era: Traditional word, casual hyperbolic usage common for decades

Generation: All ages

Social background: Universal

Regional notes: 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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