raise your eyebrows
US /reɪz jʊər ˈaɪˌbraʊz/
UK /reɪz jʊər ˈaɪˌbraʊz/

1.
眉をひそめる, 驚きや不承認を示す
to show surprise or disapproval by moving your eyebrows upwards
:
•
She couldn't help but raise her eyebrows at his outrageous suggestion.
彼女は彼のとんでもない提案に眉をひそめるしかなかった。
•
The news that he was getting married made everyone raise their eyebrows.
彼が結婚するというニュースは皆を驚かせた。