numerous UK /ˈnjuːməɹəs/US /ˈnuməɹəs/adjective 3determiner 1forms 2 adjective3 •Indefinitely large numerically; many.The reasons to refrain are numerous. •Consisting of a large number of individuals or parts.A numerous band of men and maidens escorts him by torchlight. — 1911 •(no longer used) Having many different qualities. determiner1 •An indefinite large number of.There are numerous definitions of the word 'man'.There are numerous reasons to refrain. formsmore numerous · most numerous