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adjective \ˈȯl-ˌtīm\

Simple Definition of all–time

  • : more than all others have ever been

Source: Merriam-Webster's Learner's Dictionary

Full Definition of all–time

  1. 1 :  full-time 1

  2. 2 :  being for or of all time up to and including the present; especially :  exceeding all others of all time <an all–time best seller>

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