"countless" in the adjective sense
1. countless, infinite, innumerable, innumerous, multitudinous, myriad, numberless, uncounted, unnumberable, unnumbered, unnumerable
too numerous to be counted
"countless hours"
"an infinite number of reasons"
"innumerable difficulties"
"the multitudinous seas"
"myriad stars"
Source: WordNet® (An amazing lexical database of English)
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