やばい

• 読み: やばい
• ローマ字: yabai
• 発音: /ja.ba.i/

意味

An extremely versatile exclamation meaning awesome, terrible, dangerous, or intense — context determines whether it is positive or negative.

Originally underworld jargon meaning 'dangerous,' やばい underwent a dramatic meaning shift starting in the 1990s. Young speakers began using it positively to mean 'amazing' or 'incredible.' Today it functions as an all-purpose intensifier for both good and bad situations, making it one of the most frequently heard words in casual Japanese.

例文

1. この映画やばくない？めっちゃ感動した。
2. やばい、電車に遅れる！走らないと。
3. このラーメンやばいくらい美味しいから絶対食べて。

使い方ガイド

場面: friends, social media, casual conversation

トーン: exclamatory, versatile

正しい言い方

• このケーキやばい！超美味しい！ (This cake is incredible! So delicious!)
• テスト前日なのに全然勉強してない、やばい。 (The exam is tomorrow and I haven't studied at all, oh no.)

避ける言い方

• ビジネスミーティングで「やばいですね」は避ける (Avoid 'yabai desu ne' in business meetings — too casual even with polite form)

よくある間違い

• Using やばい in formal situations like job interviews or with superiors
• Not understanding the dual positive/negative meaning from context — tone and facial expression are key

起源と歴史

Derived from やば (dangerous), possibly from 矢場 (archery range / illegal gambling house). Originally underworld slang, it entered mainstream youth language in the 1990s-2000s and is now universal.

文化的背景

時代: 1990s mainstream adoption, originally older underworld slang

世代: All ages (universal since 2000s)

社会的背景: Universal informal

地域メモ: Used across all of Japan. One of the most common informal words in the language.