腹はらを探さぐる

expression, godan verb (-ru)

probe someone's real intentions; sound someone out; fathom someone's thoughts

Used when trying to discover what someone is really thinking or planning, often through indirect questions or observation. The expression is somewhat figurative, with 腹 (belly) representing one's inner thoughts or true feelings.

• 彼かれは上じょう司しの腹はらを探さぐるような質しつ問もんをした。

  He asked a question that seemed to probe his boss's real intentions.

• 相あい手ての腹はらを探さぐるために、わざと曖あい昧まいな返へん事じをしてみた。

  I deliberately gave a vague reply to try to sound out the other person.