give someone the slip
US /ɡɪv ˈsʌm.wʌn ðə slɪp/
UK /ɡɪv ˈsʌm.wʌn ðə slɪp/

1.
dar esquinazo a, escaparse de
to escape from someone who is chasing or following you
:
•
The suspect managed to give the police the slip in the crowded market.
El sospechoso logró escapar de la policía en el mercado abarrotado.
•
We tried to follow them, but they gave us the slip.
Intentamos seguirlos, pero nos dieron esquinazo.