Time just seems to creep along on these hot summer days. to sneak up behind someone or without someone's knowledge (usually fol. by up on): The prisoners crept up on the guard and knocked him out. If you describe someone as a creep, you mean that you dislike them a great deal , especially because they are insincere and flatter people. CREEP definition: 1. to move slowly, quietly, and carefully, usually in order to avoid being noticed: 2. someone who…. Learn more. Often used in combination: the function creep of using social security numbers for general identification purposes; mission creep from a military peacekeeping role to one of providing economic development.
