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GrammarVerbsJLPT N5

Negative Forms in Japanese (ません and ない)

19 June 2026 · Mozhippattru Japanese Language School

Expressing “not” in Japanese is systematic. Here are the negative forms you''ll use every day.

Polite negative: 〜ません

Change 〜ます to 〜ません: 飲みます → 飲みません (do not drink). Simple and always polite.

Casual negative: the ない-form

  • る-verbs: drop る, add ない — 食べる → 食べない
  • う-verbs: change the final “u” to “a” + ない — 飲む → 飲まない (note: 〜う becomes 〜わない, e.g. 買う → 買わない)
  • Irregulars: する → しない, 来る → 来ない

Adjectives and nouns

  • い-adjectives: 高い → 高くない (not expensive)
  • な-adjectives / nouns: 静かじゃない / 学生じゃない

Learn the polite 〜ません first for safe everyday use, then add the casual ない-form as you progress.

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