How to say "customary" in Japanese

• 伝統的でんとうてきCommon
  na-adjectiveThe everyday word here, but its core sense is 'traditional': choose it when 'customary' implies something long-established and handed down — traditional dress, methods, or roles — rather than merely what usually happens.
  能のうは伝統的でんとうてきな日本にっぽんの芸術げいじゅつである。↗

  Noh is a traditional Japanese art.
• 慣例的かんれいてき
  na-adjectiveFor 'customary' meaning 'done as a matter of established practice' — the customary procedure, formalities, or greeting — this is the word you want; it suggests practice fixed by precedent, often in business or official settings.
• 慣習的かんしゅうてき
  na-adjectiveFor 'customary' meaning 'based on social custom' — what a community does by convention rather than written rule — this is the natural choice, pointing to custom itself rather than formal precedent.
• 慣用的かんようてき
  na-adjectiveA marginal match for 'customary': the word really describes established usage — idiomatic phrasing, the accepted ordinary way of doing things — so it is seldom the word you want here.
• 習慣的しゅうかんてき
  na-adjectiveThe closest match when 'customary' means 'habitual' — done from habit or long-standing routine — rather than when social custom or established convention is the point.

伝統的 is the common choice for the 'traditional' sense; 慣例的 fits established practice or convention, 慣習的 practices rooted in social custom, 習慣的 the 'habitual' sense, while 慣用的 is marginal — really about idiomatic usage.

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

• 伝統的でんとうてきtraditional
• 慣例的かんれいてきcustomary
• 慣習的かんしゅうてきcustomary
• 慣用的かんようてきcustomary
• 習慣的しゅうかんてきhabitual
• ありきたりcommon
• いつもusual