We found one dictionary that defines the word superproductive:

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1. superproductive: Wiktionary

Definitions from Wiktionary (superproductive) ▸ adjective:  Extremely productive. ▸ Words similar to superproductive ▸ Usage examples for superproductive ▸ Idioms related to superproductive ▸ Wikipedia articles (New!) ▸ Popular nouns described by superproductive ▸ Words that often appear near superproductive ▸ Rhymes of superproductive ▸ Invented words related to superproductive