WordNet (r) 3.0 (2006):
slip away v 1: leave furtively and stealthily; "The lecture was boring and many students slipped out when the instructor turned towards the blackboard" [syn: slip away, steal away, sneak away, sneak off, sneak out] 2: pass by; "three years elapsed" [syn: elapse, lapse, pass, slip by, glide by, slip away, go by, slide by, go along]