How to say "refer" in Japanese

• 付するふするCommon
  suru verb (irregular), transitive verbCovers 'refer' in the sense of handing a matter over to someone for handling or decision, as when a question is referred to a committee; this is the common word for that sense.
  真相しんそうは絶対ぜったい秘密ひみつに付ふされている。↗

  The truth of the matter is kept absolutely secret.
• 口にするくちにする
  expression, suru verb, transitive verbCovers 'refer (to)' as mentioning or speaking of something; its core is putting things into words, so it fits when something is brought up or said aloud in conversation; it is a less common word.
  そういうことは口くちにするな。↗

  Don't talk about such a thing.
• 付すふす
  godan verb, transitive verbA less common counterpart of 付する with the same senses — to entrust, refer, or handle a matter; for the 'refer' sense, 付する is the usual choice, so this is seldom the form you need.

Use 「付する」 for 'refer' meaning handing a matter over to be dealt with; use 「口にする」 for 'refer to' meaning to mention or speak of something; 「付す」 is just a less common variant of 「付する」.

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

• 付するふするto entrust
• 口にするくちにするto speak (of)
• 付すふすto entrust