scare/frighten someone witless

US /skɛr/ˈfraɪtən ˈsʌmˌwʌn ˈwɪtlɪs/
UK /skɛr/ˈfraɪtən ˈsʌmˌwʌn ˈwɪtlɪs/
"scare/frighten someone witless" picture
1.

把某人吓得魂不附体, 把某人吓得不知所措

to frighten someone so much that they are unable to think clearly or act sensibly

:
The sudden loud noise scared him witless.
突如其来的巨响把他吓得魂不附体
The ghost story frightened the children witless.
那个鬼故事把孩子们吓得魂不附体