'Sentimentalism' definitions:

Definition of 'sentimentalism'

(from WordNet)
noun
The excessive expression of tender feelings, nostalgia, or sadness in any form
noun
A predilection for sentimentality

Definition of 'Sentimentalism'

From: GCIDE
  • Sentimentalism \Sen`ti*men"tal*ism\, n. [Cf. F. sentimentalisme.] The quality of being sentimental; the character or behavior of a sentimentalist; sentimentality. [1913 Webster]