(a.) Unneeded; not essential or intrinsic\; Not belonging to, or dependent upon, a thing; without or beyond a thing; foreign; as, to separate gold from extraneous matter.

accidental added additional adrift adventitious alien apart barbarian barbaric barbarous beside the mark beside the point beside the question detached disconnected discrete disjunct disrelated dissociated exotic exterior external extra extraorganismal extraterrestrial extrinsic foreign foreign-born immaterial impersonal impertinent inadmissible inapplicable inapposite inappropriate inapt incidental incommensurable incomparable inconsequent independent inessential insular intrusive irrelative irrelevant isolated needless nihil ad rem nonessential nonsubjective not at issue objective off the subject other out of place out-of-the-way outland outlandish outlying outside outward parenthetical peripheral pointless remote removed segregate separate separated strange superfluous supernumerary ulterior unaffiliated unallied unapt unassociated unconnected unearthly unessential unfitting unnecessary unneeded unrelatable unrelated