Source : Webster's Revised Unabridged Dictionary (1913)

Sentimentality \Sen`ti*men*tal"i*ty\, n. [CF. F.
   sentimentalit['e].]
   The quality or state of being sentimental.

Source : WordNet®

sentimentality
     n 1: falsely emotional in a maudlin way [syn: {mawkishness}, {drippiness}]
     2: extravagant or affected feeling or emotion