He tried to stay calm, but you could hear the anger creeping in.
Errors crept in as the text got longer.
creep into +
(某事物) 出現 (在某事物中)
An angry tone crept into her voice.
creep * out +
使 (某人) 感到憂慮或不安
He creeps me out when he gets drunk.
creep out on +
He's been creeping out on that computer game all day.
creep over +
Fear crept over me as I walked through the graveyard.
creep up on +
They crept up on their rivals and overtook them.
I'm going to be late tonight as something has just cropped up at work.