voluminous

Consider that volume is a measure of size. That will help you understand that voluminous refers to something very large in size or extent.

Suppose instead of calling a book a book, you called it a volume. Suddenly, it seems to be part of a much bigger thing. And what if it were only Volume I, with 23 more volumes to go? Even bigger, right? In fact, it's more than big; it’s voluminous. Voluminous describes very large things. The flouncy skirt of a wedding dress? Voluminous. Media coverage of some movie star's divorce? Also voluminous. The word voluminous describes something ample, extensive, and just plain huge.

Definitions of voluminous
  1. adjective
    large in volume or bulk
    “a voluminous skirt”
    Synonyms:
    big, large
    above average in size or number or quantity or magnitude or extent
  2. adjective
    large in number or quantity (especially of discourse)
    “a subject of voluminous legislation”
    synonyms: copious
    abundant
    present in great quantity
  3. adjective
    marked by repeated turns and bends
    synonyms: tortuous, twisting, twisty, winding
    crooked
    having or marked by bends or angles; not straight or aligned
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