INNUMEROUS
countless, infinite, innumerable, innumerous, multitudinous, myriad, numberless, uncounted, unnumberable, unnumbered, unnumerable
(adjective) too numerous to be counted; “countless hours”; “an infinite number of reasons”; “innumerable difficulties”; “the multitudinous seas”; “myriad stars”
Source: WordNet® 3.1
Etymology
Adjective
innumerous (comparative more innumerous, superlative most innumerous)
Not capable of being counted or numerated; indefinitely numerous.
Synonyms
• (not capable of being counted): innumerable, countless, numberless, unnumbered
Antonyms
• unnumerous
Source: Wiktionary
In*nu"mer*ous, a. Etym: [L. innumerosus, innumerus. See Numerous.]
Definition: Innumerable. [Archaic] Milton.
Source: Webster’s Unabridged Dictionary 1913 Edition