creep up on

US /kriːp ʌp ɑːn/
UK /kriːp ʌp ɑːn/
"creep up on" picture
1.

aproximar-se sorrateiramente, pegar de surpresa

to approach someone or something slowly and quietly so as not to be noticed

:
The cat tried to creep up on the bird.
O gato tentou se aproximar sorrateiramente do pássaro.
Don't let problems creep up on you; address them early.
Não deixe os problemas se acumularem; resolva-os cedo.