We found one dictionary that defines the word sillyism:

General (1 matching dictionary)

1. sillyism: Wiktionary

Definitions from Wiktionary (sillyism) ▸ noun:  silliness ▸ Words similar to sillyism ▸ Usage examples for sillyism ▸ Idioms related to sillyism ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sillyism ▸ Words that often appear near sillyism ▸ Rhymes of sillyism ▸ Invented words related to sillyism