腰こしを浮うかす

expression, godan verb (-su)

half-rise from one's seat

Describes lifting one's hips slightly off a seat, often in preparation to stand or as a polite gesture.

• 彼かれは驚おどろいて腰こしを浮うかした。

  He half-rose from his seat in surprise.

• お客きゃくさんが来きたので、ソファから腰こしを浮うかして挨あい拶さつした。

  When the guest arrived, I lifted myself slightly off the sofa to greet them.