Synonyms and related words :
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