act up
中級 (B1) informal
When a person is being naughty or difficult, or when something stops working the way it should.
"The kids started acting up as soon as the babysitter arrived."
文脈の中で聞く
27
exurb1a · 0:54
Better keep the act up I guess.
Inside a Maximum Security Prison’s Isolation Unit | Solitary Nation (full documentary) | FRONTLINE
FRONTLINE PBS | Official · 27:52
The only way you ever get anything around here is to act up.