(a.) Irrelevant; unimportant; of no consequence\.

absonant back-burner contradictory contrary to reason cursory depthless dinky dispensable fallacious faulty few flawed footling illogical immaterial inappreciable inauthentic inconclusive incongruous inconsequent inconsiderable inconsistent inessential inferior insignificant invalid irrational irrelevant lightweight little loose low meager miniature minor minute negligible no great shakes nonessential nonscientific not following not vital nugatory paltry paralogical petit petty picayune picayunish piddling reasonless self-annulling self-contradictory self-refuting senseless shallow short skin-deep slight small superficial technical tiny trifling trivial unauthentic unconnected unessential unimportant unimpressive unnoteworthy unphilosophical unreasonable unscientific without reason worthless