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Synonyms for Voluminous (same or very similar meaning)

WordNet sense 1 (marked by repeated turns and bends):
tortuous, twisty, winding, twisting

WordNet sense 2 (having or marked by bends or angles; not straight or aligned):
crooked, crooked

WordNet sense 3 (above average in size or number or quantity or magnitude or extent):
big, large

WordNet sense 4 (large in number or quantity (especially of discourse)):

WordNet sense 5 (present in great quantity):

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