noun

verb

1. [intransitive] to move slowly, quietly and carefully, because you do not want to be seen or heard
• I crept up the stairs, trying not to wake my parents.
• I heard someone creeping around the house.
2. [intransitive] to move with your body close to the ground; to move slowly on your hands and knees
3. [intransitive] to move or develop very slowly
• Her arms crept around his neck.
• A slight feeling of suspicion crept over me.
4. [intransitive] to grow along the ground or up walls using long stems or roots
5. [intransitive] to be too friendly or helpful to somebody in authority in a way that is not sincere, especially in order to get an advantage from them

make your flesh creep

1. to make you feel afraid or full of horror
• Just the sight of him makes my flesh creep.
• The story made his flesh creep.

noun

1. [countable] a person that you dislike very much and find very unpleasant
• He's a nasty little creep!
• You little creep!
2. [countable] a person who is not sincere but tries to win your approval by being nice to you
• He’s the sort of creep who would do that kind of thing!
3. [uncountable] the development of a project beyond the goal that was originally agreed
• The World Bank has been accused of mission creep when seeking to address these concerns.
• The inclusion of health data on identity cards was condemned as function creep.
• creep of something We need to prevent this slow creep of costs.
• The creep of suburban shopping malls is shrinking the countryside.

give somebody the creeps

1. to make somebody feel nervous and slightly frightened, especially because somebody/something is unpleasant or strange
• This old house gives me the creeps.