We found one dictionary that defines the word dimwitticism:

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1. dimwitticism: Wiktionary

Definitions from Wiktionary (dimwitticism) ▸ noun:  A dimwitted or idiotic remark. ▸ Words similar to dimwitticism ▸ Usage examples for dimwitticism ▸ Idioms related to dimwitticism ▸ Wikipedia articles (New!) ▸ Popular adjectives describing dimwitticism ▸ Words that often appear near dimwitticism ▸ Rhymes of dimwitticism ▸ Invented words related to dimwitticism