shrug

US /ʃrʌɡ/
UK /ʃrʌɡ/
"shrug" picture
1.

raise (one's shoulders) slightly and momentarily to express doubt, ignorance, or indifference

:
He just shrugged and walked away.
She gave a small shrug, indicating she didn't know the answer.
1.

an act of shrugging one's shoulders

:
He responded with a helpless shrug.
A quick shrug was all the answer I got.