noun
wavering; unsteady; ready to flee
Describes a posture or attitude where one is half-standing, hesitant, or ready to leave; often implies lack of commitment or nervousness.
彼は浮き腰で、いつでも逃げ出しそうだった。
He was on edge and looked ready to bolt at any moment.
会議中、彼女は浮き腰で落ち着かなかった。
During the meeting, she was fidgety and couldn't settle down.
noun
floating hip throw (judo)
A judo technique where the thrower lifts the opponent's hips while turning; a specific term in martial arts.
浮き腰は柔道の投げ技の一つです。
Uki-goshi is one of the throwing techniques in judo.
Compound of 浮き (uki, 'floating') + 腰 (koshi, 'hips'). The literal image of 'floating hips' gives rise to both the figurative sense of being unsteady or ready to move, and the judo technique name.