#1 excess n. [surplus, surplusage, nimiety] a quantity much larger than is needed. wn #2 excess n. [excessiveness, inordinateness] immoderation as a consequence of going beyond sufficient or permitted limits. wn #3 excess n. [surfeit, overabundance] the state of being more than full. wn #4 excess n. [overindulgence] excessive indulgence; "the child was spoiled by overindulgence". wn