Word Study
irrelevant
OXFORD DICTIONARY
irrelevant, adj. (often foll. by to) not relevant; not applicable (to a matter in hand).
Derivative
irrelevance n. irrelevancy n. irrelevantly adv.
THESAURUS
irrelevant
adrift, alien, back-burner, beside the mark, beside the point, beside the question, dinky, dispensable, extraneous, extrinsic, foreign, gratuitous, ill-adapted, ill-assorted, ill-chosen, ill-considered, ill-fitted, ill-matched, ill-seasoned, ill-sorted, ill-suited, ill-timed, immaterial, impertinent, improper, inadmissible, inapplicable, inapposite, inappreciable, inappropriate, inapt, inauspicious, incidental, inconsequent, inconsequential, inconsiderable, inconvenient, inept, inessential, inexpedient, infelicitous, inferior, inopportune, insignificant, intempestive, intrusive, irrelative, late, little, mal a propos, maladjusted, malapropos, minor, minute, misjoined, mismatched, mismated, misplaced, mistimed, negligible, nihil ad rem, nonessential, not at issue, not vital, off base, off the subject, out of character, out of joint, out of keeping, out of line, out of phase, out of place, out of proportion, out of season, out of time, out of tune, out-of-the-way, parenthetical, petit, premature, small, technical, too late, too soon, unadapted, unapt, unbecoming, unbefitting, uncalled-for, unconnected, unessential, unfavorable, unfit, unfitted, unfitting, unfortunate, unhandy, unhappy, unimportant, unimpressive, unlucky, unnoteworthy, unpropitious, unqualified, unready, unrelated, unripe, unseasonable, unseemly, unsuitable, unsuited, untimely, untoward, wrongROGET THESAURUS
irrelevant
Irrelation
N irrelation, dissociation, misrelation, inapplicability, inconnection, multifariousness, disconnection, inconsequence, independence, incommensurability, irreconcilableness, heterogeneity, unconformity, irrelevancy, impertinence, nihil ad rem, intrusion, non-pertinence, irrelative, irrespective, unrelated, arbitrary, independent, unallied, unconnected, disconnected, adrift, isolated, insular, extraneous, strange, alien, foreign, outlandish, exotic, not comparable, incommensurable, heterogeneous, unconformable, irrelevant, inapplicable, not pertinent, not to the, purpose, impertinent, inapposite, beside the mark, a propos de bottes, aside from the purpose, away from the purpose, foreign to the purpose, beside the purpose, beside the question, beside the transaction, beside the point, misplaced, traveling out of the record, remote, far-fetched, out of the way, forced, neither here nor there, quite another thing, detached, segregate, disquiparant, multifarious, discordant, incidental, parenthetical, obiter dicta, episodic, parenthetically, by the way, by the by, en passant, incidentally, irrespectively, without reference to, without regard to, in the abstract, a se.Absence of Influence
N absence of influence, impotence, powerlessness, inertness, irrelevancy, uninfluential, ineffective, inconsequential, nugatory, unconducing, unconducive, unconducting to, powerless, irrelevant.& Sophistry
N intuition, instinct, association, hunch, gut feeling, presentiment, premonition, rule of thumb, superstition, astrology, faith (supposition), sophistry, paralogy, perversion, casuistry, jesuitry, equivocation, evasion, chicane, chicanery, quiddet, quiddity, mystification, special pleading, speciousness, nonsense, word sense, tongue sense, false reasoning, vicious reasoning, circular reasoning, petitio principii, ignoratio elenchi, post hoc ergo propter hoc, non sequitur, ignotum per ignotius, misjudgment, false teaching, sophism, solecism, paralogism, quibble, quirk, elenchus, elench, fallacy, quodlibet, subterfuge, subtlety, quillet, inconsistency, antilogy, a delusion, a mockery, and a snare, claptrap, cant, mere words, lame and impotent conclusion, meshes of sophistry, cobwebs of sophistry, flaw in an argument, weak point, bad case, overrefinement, hairsplitting, intuitive, instinctive, impulsive, independent of reason, anterior to reason, gratuitous, hazarded, unconnected, unreasonable, illogical, false, unsound, invalid, unwarranted, not following, inconsequent, inconsequential, inconsistent, absonous, absonant, unscientific, untenable, inconclusive, incorrect, fallacious, fallible, groundless, unproved, non sequitur, it does not follow, deceptive, sophistical, jesuitical, illusive, illusory, specious, hollow, plausible, ad captandum, evasive, irrelevant, weak, feeble, poor, flimsy, loose, vague, irrational, nonsensical, foolish, frivolous, pettifogging, quibbling, finespun, overrefined, at the end of one's tether, au bout de son latin, intuitively, by intuition, illogically, non constat, that goes for nothing.For further exploring for "irrelevant" in Webster Dictionary Online