slip by (third-person singular simple present slips by, present participle slipping by, simple past and past participle slipped by)
- (transitive, intransitive, sometimes figuratively) To pass without being noticed or intercepted.
2011 June 28, Piers Newbery, “Wimbledon 2011: Sabine Lisicki beats Marion Bartoli”, in BBC Sport:
She held her nerve after failing to serve out the match at the first attempt, seeing three match points slip by in a nervous service game at 6-4 5-4 and recovering from losing the tie-break to dominate the decider.
The children managed to slip by when the patroller was looking away.
The children slipped by the patroller.