How to say "liaison" in Japanese

• 情事じょうじCommon
  nounCovers 'liaison' in its romantic sense: a love affair, typically a secret or improper one. Use it when English 'liaison' could be replaced by 'affair', as in reports of a politician's liaison.
• 連係れんけいCommon
  noun, suru verb, intransitive verbCovers 'liaison' in its neutral sense of a link or coordination between people or groups, as in 'maintain close liaison with another department'. It has nothing to do with romance.

For 'liaison' as a romantic affair use 情事; for 'liaison' as a link, contact, or coordination between people or groups use 連係 — the two senses are entirely separate.

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

• 情事じょうじlove affair
• 連係れんけいconnection
• リエゾンliaison (phonetics)
• 私通しつうillicit love affair
• 連絡員れんらくいんcontact
• つなぎthickener (e.g. in cooking)
• 連音れんおんliaison
• 馴れ合いなれあいcommon-law marriage
• 密か事みそかごとsecret love affair