put on an act
US /pʊt ɑn ən ækt/
UK /pʊt ɑn ən ækt/

1.
연기하다, 가장하다
to pretend to be someone or something that you are not, or to pretend to feel something that you do not feel
:
•
She was just putting on an act to get attention.
그녀는 관심을 끌기 위해 연기하고 있었을 뿐이야.
•
Don't believe him, he's always putting on an act.
그를 믿지 마, 그는 항상 연기하고 있어.