for keeps

for keeps
    adv 1: for the winner to keep all; "they played for keeps"
    

17 Moby Thesaurus words for "for keeps":
      aye, ever, ever and again, ever and anon, evermore, for all time,
      for aye, for good, forever, forever and aye, forevermore,
      in all ages, now and forever, throughout the ages, till doomsday,
      till time stops, to keep