How to say "unlimited" in Japanese

• 限りないかぎりないCommon
  i-adjectiveCovers the boundless, endless sense of 'unlimited' — limitless space, affection, or possibility. It is figurative and emotive, suited to describing things that feel infinite rather than rules or allowances.
• 無制限むせいげんCommon
  no-adjective, na-adjectiveThe usual word when 'unlimited' means no restriction or limit is imposed, as in unlimited access, data, or time. It is the natural choice for practical, contractual, or everyday contexts.
  もし建物たてものの取り壊とりこわしが無制限むせいげんに行おこなわれるなら、美うつくしい町まちが単たんなるコンクリート・ジャングルになる危険きけんがあるのである。↗

  If the demolition of buildings is uncontrolled, a fine city is in danger of becoming nothing more than a concrete jungle.
• 無期むきCommon
  no-adjectiveOnly matches 'unlimited' in the sense of indefinite duration, and it is really 'indefinite'. It appears mainly in established expressions such as 無期懲役, a life sentence, so it is seldom the word you want.

Choose 無制限 for practical or legal restrictions being absent, 「限りない」 for poetic boundlessness of quantity or feeling, and 無期 mainly in fixed expressions about indefinite durations such as prison terms.

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

• 限りないかぎりないunlimited
• 無制限むせいげんunlimited
• 無期むきindefinite
• 制限なしせいげんなしunlimited
• 底知れぬそこしれぬbottomless
• 底知れずそこしれずbottomless
• 底知れないそこしれないbottomless