expression, ichidan verb
shrug one's shoulders
A set phrase describing the physical gesture of raising and lowering the shoulders, often to express indifference, resignation, or uncertainty.
彼は質問に答えず、ただ肩をすくめた。
He didn't answer the question, just shrugged his shoulders.
どうしようもなくて、肩をすくめるしかなかった。
There was nothing I could do, so I could only shrug.