Source : Webster's Revised Unabridged Dictionary (1913)

Bathos \Ba"thos\, n. [Gr. ? depth, fr. ? deep.] (Rhet.)
   A ludicrous descent from the elevated to the low, in writing
   or speech; anticlimax.

Source : WordNet®

bathos
     n 1: triteness or triviality of style
     2: insincere pathos [syn: {mawkishness}]
     3: a change from a serious subject to a disappointing one [syn:
         {anticlimax}]