catch out
US /kætʃ aʊt/
UK /kætʃ aʊt/

1.
pillar, descubrir
to discover someone doing something wrong or something they intended to keep secret
:
•
The teacher caught him out cheating on the exam.
El profesor lo pilló haciendo trampa en el examen.
•
She tried to lie, but her story caught her out.
Intentó mentir, pero su historia la delató.
2.
pillar, poner en apuros
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.
El abogado intentó pillar al testigo con una serie de preguntas capciosas.
•
Be careful, he's trying to catch you out.
Ten cuidado, está intentando pillarte.