myriad

(noun) a large indefinite number. Examples: "He faced a myriad of details."

(noun) the cardinal number that is the product of ten and one thousand. Synonyms: ten thousand, 10000.

(adj) too numerous to be counted. Synonyms: countless, infinite, innumerable, innumerous, multitudinous, numberless, uncounted, unnumberable, unnumbered, unnumerable. Examples: "Incalculable riches." "Countless hours." "An infinite number of reasons." "Innumerable difficulties." "The multitudinous seas." "Myriad stars." "Untold thousands."