딴청을 피워요 · 딴청을 피웠어요 · 딴청 피우지 마
to act as if one didn't hear; to pretend to be busy with something else
Example
숙제 얘기를 하자 아이는 딴청을 피웠어요.
When I brought up homework, the kid pretended not to hear.
Word parts
Built on 딴 'other, different' — acting busy with something else.
Good to know
딴전을 피우다 means the same thing.