v.tr. 1 shut or keep out (a person or thing) from a place, group, privilege, etc. 2 expel and shut out. 3 remove from consideration (no theory can be excluded). 4 prevent the occurrence of; make impossible (excluded all doubt). excluded middle Logic the principle that of two contradictory propositions one must be true. excludable adj. excluder n.
[ ME f. L excludere exclus- (as EX-(1), claudere shut) ]