How to say "dealing" in Japanese

• 扱いあつかいJLPT N1approx.Common
  nounIts 'dealing' is the 'dealing with' sense: handling, or the treatment and service a person or thing receives. It is not about buying and selling; for commercial 'dealing', use 売買 or 商い.
  この旅館りょかんは客きゃくの扱あつかいがよい。↗

  This inn gives good service.
• 売買ばいばいJLPT N2approx.Common
  noun, suru verb, transitive verbIts 'dealing' is commercial: buying and selling, trade, or illicit dealing such as trafficking in humans, arms, or drugs. Think of 'dealing in' something — the transaction of buying and selling.
  彼かれは革製品かわせいひんの売買ばいばいをしている。↗

  He buys and sells leather goods.
• 商いあきないCommon
  nounIts 'dealing' is the trade or business sense: trading as a commercial activity. Choose it when 'dealing' means doing business; for the buying-and-selling transaction itself, 売買 is the closer word.
  彼かれはあの店みせで野菜やさいを商あきないしています。↗

  He deals in vegetables at that shop.

For 'dealing', 「扱い」 is about handling or treatment — dealing with someone or something — while 売買 and 「商い」 are commercial: 売買 for buying-and-selling transactions, including trafficking; 「商い」 for trade or business.

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

• 扱いあつかいtreatment
• 売買ばいばいtrade
• 商いあきないtrade
• ディーリングdealing
• 競取りせどりdealing (in used books)
• お見舞いおみまいdealing (a hit)