We found one dictionary that defines the word overactive imagination:

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1. Overactive imagination: Wikipedia, the Free Encyclopedia

▸ Words similar to overactive imagination ▸ Usage examples for overactive imagination ▸ Idioms related to overactive imagination ▸ Wikipedia articles (New!) ▸ Words that often appear near overactive imagination ▸ Rhymes of overactive imagination ▸ Invented words related to overactive imagination