sneak up

Từ điển WordNet v3.1 - WordNet Dictionary

verb

advance stealthily or unnoticed (Freq. 1)
- Age creeps up on you
• Syn:
creep up
• Hypernyms:
advance, progress, pass on, move on, march on, go on
• Verb Frames:
- Something ----s
- Something is ----ing PP