creep up

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

se faufiler, augmenter progressivement

to move slowly and quietly so as not to be noticed

:
The cat crept up on the bird.
Le chat s'est faufilé vers l'oiseau.
Prices have been creeping up steadily.
Les prix ont augmenté régulièrement.