catch out

US /kætʃ aʊt/
UK /kætʃ aʊt/
"catch out" picture
1.

見つける, 暴く

to discover someone doing something wrong or something they intended to keep secret

:
The teacher caught him out cheating on the exam.
先生は彼が試験でカンニングしているのを見つけた
She tried to lie, but her story caught her out.
彼女は嘘をつこうとしたが、話が彼女を裏切った
2.

困らせる, 罠にかける

to put someone in a difficult or embarrassing situation, especially by asking a trick question

:
The lawyer tried to catch the witness out with a series of tricky questions.
弁護士は一連の巧妙な質問で証人を困らせようとした
Be careful, he's trying to catch you out.
気をつけて、彼はあなたを困らせようとしている