How to say "permanent" in Japanese

• 常任じょうにんCommon
  suru verb, intransitive verb, no-adjectiveCovers 'permanent' in the sense of a standing or regular position, such as a permanent post or member. It applies to people and roles held continuously, not to objects or states.
• 常設じょうせつCommon
  suru verb, transitive verb, no-adjectiveUsed for 'permanent' institutions or installations, most typically a standing committee or a permanent exhibit. The nuance is something set up to remain in place rather than a personal appointment.
• 不変ふへんCommon
  na-adjective, no-adjectiveMatches the abstract, figurative sense of 'permanent' as eternal, everlasting, immutable or unchangeable. It describes qualities or conditions that never change, not offices, facilities or stocked items.
  これ不変ふへんの真理しんりなり。↗

  This is an immutable truth.
• 常備じょうびCommon
  no-adjectiveMeans keeping something permanently on hand or in readiness, as in a standing or reserve force or regular supplies. Use it when 'permanent' describes something maintained or stocked, not abstract changelessness.

For 'permanent', choose by what is permanent: 常任 for standing posts, 常設 for standing facilities or exhibits, 常備 for things kept on hand, and 不変 for the abstract sense of unchanging.

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

• 常任じょうにんstanding
• 常設じょうせつstanding (committee)
• 不変ふへんeternal
• パーマネントpermanent
• 常置じょうちpermanent
• 恒久的こうきゅうてきpermanent
• 末永いすえながいpermanent
• 永続的えいぞくてきpermanent
• 一生消えないいっしょうきえないpermanent
• 一定不変いっていふへんinvariable
• 常備じょうびstanding
• 定じょうregular
• スタンディングstanding (e.g. army)