noun
bent back; crouching posture
Describes a posture with the back bent and hips lowered, often from fear or caution.
彼はへっぴり腰で暗い廊下を進んだ。
He crept down the dark hallway with his back bent and knees weak.
noun
Figurative use for a hesitant, cowardly attitude; often implies someone is half-hearted or lacking confidence.
へっぴり腰で交渉しても、いい結果は得られない。
If you negotiate with a timid attitude, you won't get good results.