WordNet (r) 3.0 (2006):

all in
    adj 1: very tired; "was all in at the end of the day"; "so beat
           I could flop down and go to sleep anywhere"; "bushed
           after all that exercise"; "I'm dead after that long trip"
           [syn: all in(p), beat(p), bushed(p), dead(p)]

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "all in":
   beat, beat up, beaten, bleary, bone-weary, bushed, dead,
   dead-and-alive, dead-tired, deadbeat, depleted, dog-tired,
   dog-weary, done, done in, done up, drained, exhausted, fagged out,
   far-gone, gone, knocked out, played out, pooped, pooped out,
   prostrate, ready to drop, spent, tired out, tired to death,
   tuckered out, used up, washed-out, washed-up, weary unto death,
   whacked, wiped out, worn-out