act up

• Фразовый глагол, используемый для указания на то, что что-то работает неправильно или кто-то ведёт себя плохо или озорно.

A phrasal verb used to indicate that something is not functioning properly or that someone is behaving badly or mischievously.

uncountable · intransitive · phrasal, no object

1. Misbehaveinformal

   To behave badly or cause trouble, especially for children or animals.

   Плохо себя вести

   • The children started to act up when they got bored.
   • My dog always acts up when strangers come to the door.
   • If you act up in class, you'll get detention.

   Synonymscarry onmisbehaveplay up

   Antonymsbehaveobey

2. Malfunctioninformal

   To function poorly or not work correctly, usually for machines or body parts.

   Сбоить

   • My computer is acting up again; it keeps freezing.
   • His knee started acting up after the long run.
   • The car's engine acts up when it's cold outside.

   Synonymsbreak downconk outfailgo wrongmalfunctionmisbehaveplay up

   Antonymsfunctionoperatework

Base verbact