難しい: How to Say “Difficult” in Japanese

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ExpressionReadingMeaning
難しいmuzukashiiDifficult / hard / complex
難しそうmuzukashisouLooks difficult / seems hard
難しくないmuzukashikunaiNot difficult / not hard
難易度が高いnani-ido ga takaiHigh difficulty level (formal)
Yuka

難しい seems like one of those words everyone knows, but I sometimes hear むずかしい instead. Is that different?

Rei

Same word! むずかしい is just a casual pronunciation variant of むずかしい. Both are standard — you’ll hear both in natural speech. The kanji 難しい is the formal written form.

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What Does 難しい (muzukashii) Mean?

難しい is an i-adjective meaning difficult, hard, or complex. It is one of the most commonly used adjectives in Japanese and applies to tasks, subjects, situations, and abstract concepts.

  • この問題は難しい。 — This problem is difficult.
  • 日本語の漢字は難しい。 — Japanese kanji is difficult.
  • 難しい質問ですね。 — That’s a difficult question.
  • 難しく考えないで。 — Don’t overthink it / don’t make it complicated.

難しい vs Related Expressions

ExpressionMeaningNuance
難しいDifficultGeneral; intellectual or practical difficulty
大変 (taihen)Hard / tough / exhaustingEmphasizes physical or emotional difficulty
複雑 (fukuzatsu)Complex / complicatedMultiple intertwined elements
無理 (muri)Impossible / can’tBeyond ability or possibility
手強い (tegowai)Tough / formidableA tough opponent or challenge
Yuka

What’s the difference between 難しい and 大変?

Rei

難しい is about mental or skill difficulty — “this problem is hard to understand.” 大変 is about the burden or effort involved — “this situation is tough / a lot of work.” A task can be 大変 (exhausting) without being 難しい (complicated).

Useful Patterns

  • 難しすぎる — Too difficult
  • 難しくなってきた — It’s getting harder
  • 難しいけど面白い — Difficult but interesting
  • 難しく考えすぎ — Overthinking it / making it too complicated
  • 難しい顔をする — To make a serious/troubled face

Quick Quiz

Translate or choose:

  • 1. This exam is really difficult. — この試験は本当に___。
  • 2. Don’t make it so complicated! — そんなに___く考えないで!
  • 3. It looks difficult but let’s try. — ___そうだけどやってみよう。

Answers: 1. 難しい 2. 難し 3. 難しい


💬 Want to practice these phrases with a real person? Find a Japanese conversation partner or tutor on italki — speaking practice you can start today.

Summary

ExpressionBest use
難しいIntellectual/skill difficulty — most versatile
大変Tough, exhausting, burdensome
複雑Complex with many elements
無理Impossible / can’t do it
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