資料來源 : pyDict

未必有,不可信

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Unlikelihood \Un*like"li*hood\, n.
   Absence of likelihood.

資料來源 : WordNet®

unlikelihood
     n : the improbability of a specified outcome [syn: {unlikeliness}]
         [ant: {likelihood}, {likelihood}]