unpunctual Antonyms

punctual accurate just in the nick of time just at the right time at the proper time in the very nick of time in the right time exactly on time at the right time at the appointed time bang on time at the designated time at the scheduled time right in time right on cue right on schedule right on the dot right at the time right on the nose at the appropriate time at precisely the right time at precisely the right moment antique backward beginning prompt promptly punctually timely 24-7 in due time in due course bang on spot on on the dot on the knocker in a timely manner dead on time at just the right moment at the exact time specified