We found one dictionary that defines the word daredn't:

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1. daredn't: Wiktionary

Definitions from Wiktionary (Daredn't) ▸ verb:  Contraction of dared not. ▸ Words similar to daredn't ▸ Usage examples for daredn't ▸ Idioms related to daredn't ▸ Wikipedia articles (New!) ▸ Words that often appear near daredn't ▸ Rhymes of daredn't ▸ Invented words related to daredn't