get up to

US /ɡet ʌp tuː/
UK /ɡet ʌp tuː/
"get up to" picture
1.

uitspoken, uitvreten

to be busy with something, especially something that other people might not approve of

:
What have you been getting up to?
Wat heb je uitgespookt?
The children are always getting up to mischief.
De kinderen halen altijd kattenkwaad uit.