slow up
US /sloʊ ʌp/
UK /sloʊ ʌp/

1.
vertragen, afremmen
to reduce speed or activity
:
•
The car had to slow up as it approached the sharp bend.
De auto moest vertragen toen hij de scherpe bocht naderde.
•
You need to slow up your pace if you want to last longer in the race.
Je moet je tempo vertragen als je langer wilt meedoen aan de race.