- (transitive)
to exceed in number
WordReference Random House Learner's Dictionary of American English © 2025
out•num•ber /ˌaʊtˈnʌmbɚ/USA pronunciation
v. [~ + object]
WordReference Random House Unabridged Dictionary of American English © 2025- to be greater than in number:Our forces outnumber theirs by over two to one.
out•num•ber
(out′num′bər),USA pronunciation v.t.
- to exceed in number.
- out- + number 1660–70
Collins Concise English Dictionary © HarperCollins Publishers::
'outnumber' also found in these entries (note: many are not synonyms or translations):