تعريف creep up on في الإنجليزية الإنجليزية القاموس.
If a feeling or state creeps up on you, you hardly notice that it is beginning to affect you or happen to you. The desire to be a mother may creep up on you unexpectedly
If you creep up on someone, you move slowly closer to them without being seen by them. They'll creep up on you while you're asleep