multitudinous (adj.)

c. 1600, "of vast extent;" 1620s, "consisting of a great number," from Latin multitudin-, stem of multitudo (see multitude) + -ous. First in Shakespeare or Dekker, depending on the dating of their publications, though it is certainly "Macbeth" that has fixed it in the language. Related: Multitudinously; multitudinousness.

Will all great Neptune's ocean wash this blood
Clean from my hand? No; this my hand will rather
The multitudinous seas incarnardine,
Making the green one, red.

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Definitions of multitudinous from WordNet

multitudinous (adj.)
too numerous to be counted;
the multitudinous seas
Synonyms: countless / infinite / innumerable / innumerous / myriad / numberless / uncounted / unnumberable / unnumbered / unnumerable