We found one dictionary that defines the word superstrates:

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1. superstrates: Wiktionary

Opposite: substrates, understrates, subordinates ▸ Words similar to superstrates ▸ Usage examples for superstrates ▸ Idioms related to superstrates ▸ Wikipedia articles (New!) ▸ Words that often appear near superstrates ▸ Rhymes of superstrates ▸ Invented words related to superstrates