How to say "priceless" in Japanese

• 尊いとうといJLPT N1approx.Common
  i-adjectiveThe common word for things whose value is emotional or moral rather than monetary — precious people, memories, moments. Its 'priceless' sense is 'so precious that no price could be put on it'.
  愛あいより尊とうとい物ものはない。↗

  Nothing is as precious as love.
• 無価むか
  no-adjectiveA literal term: 無 'without' plus 価 'value', i.e. 'beyond price'. It is less common and seldom the word you actually want; in ordinary contexts a more familiar word for 'priceless' serves better.
• 値千金あたいせんきん
  no-adjectiveAn emphatic idiom, literally 'worth a thousand in gold'. It vividly declares that something is extremely valuable, fitting appreciative verdicts on experiences or things whose worth is immense.
• プライスレス
  na-adjective, nounThe direct loanword from English 'priceless', used much as in English — notably in advertising — for things or moments money cannot buy. It retains a distinctly foreign, promotional flavor.
• 二つとないふたつとない
  expression, i-adjectiveLiterally 'there is no second one'. It covers 'priceless' through uniqueness: something one of a kind and irreplaceable is thereby beyond price. Best when the point is that no duplicate exists.

Use 「尊い」 for the everyday sense of something precious beyond money; 「二つとない」 stresses one-of-a-kind irreplaceability, 値千金 vividly declares great worth, 「プライスレス」 is the English loanword, and 無価 is a less common literal term.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 尊いとうといprecious
• 無価むかpriceless
• 値千金あたいせんきんpriceless
• プライスレスpriceless
• 二つとないふたつとないunique