creep verb
ADV. quietly | slowly | stealthily | about, around, back, in, out, up I could hear someone creeping around downstairs. He crept up behind me.
PREP. along He crept stealthily along the corridor. | down, into (figurative) Suspicion crept into her voice. | over (figurative) A feeling of dread crept over him. | out of, up on The cat quietly crept up on the pigeon. (figurative) Fatigue was creeping up on her.
You can also check other dicts: creep (English, 中文解释 ), wordnet sense, Collins Definition