Search Result for "uncheerfulness": 
Wordnet 3.0

NOUN (2)

1. a feeling of dreary or pessimistic sadness;
[syn: cheerlessness, uncheerfulness]

2. not conducive to cheer or good spirits; 



WordNet (r) 3.0 (2006):

uncheerfulness
    n 1: a feeling of dreary or pessimistic sadness [syn:
         cheerlessness, uncheerfulness] [ant: blitheness,
         cheerfulness]
    2: not conducive to cheer or good spirits [ant: cheer,
       cheerfulness, sunniness, sunshine]