How to say "consultant" in Japanese

• コンサルタントCommon
  nounThe direct loanword for a consultant: a professional hired to give expert advice in fields such as business or management. This is the natural choice for the job-title sense of 'consultant'.
  どのコンサルタントを使つかうかと言いう議論ぎろんが何時間なんじかんも続つづいた。↗

  The debate over which consultant to use went on for hours.
• 顧問こもんCommon
  nounA standing adviser attached to a company, organization, or group, often as a formal position. 'Consultant' appears among its glosses, but its core sense is 'adviser' — someone retained to give ongoing guidance.
  社長しゃちょうは会議かいぎのために顧問こもんたちを集あつめた。↗

  The president assembled his advisers for a conference.
• 参与さんよCommon
  nounAn adviser or councillor who takes part in an organization's deliberations or planning. For a professional consultant it is seldom the word you want; 'adviser' is usually the better rendering.

Use 「コンサルタント」 for a professional consultant; 顧問 for a standing adviser attached to a company or organization; 参与 is best taken as 'adviser' or 'councillor' rather than 'consultant'.

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

• コンサルタントconsultant
• 顧問こもんadviser
• コンサルconsulting
• 診断士しんだんしconsultant
• 参与さんよconsultant