资料来源 : pyDict

出故障,不正常;不一致,不相称

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Whack \Whack\, n.
   A portion; share; allowance. [Slang]

   {Out of whack}, out of order. [Slang]

资料来源 : WordNet®

out of whack
     adj : out of balance or out of adjustment; "the front wheel of my
           bicycle is out of whack"