Synonyms of trivial

1 Syllable
slight, mean, small, shrimp, least
2 Syllables
low-born, subpar, trifling, stupid, slighter, shoestring, slightest, runter, shelfer, pointless, scanty, trite, short-end, slender, ungrown, minors, shrimper, shallow, minor, shoaler, niggling, measlier, skin-deep, quick-fix, deadwood, lightweight, flimsy, substract, bitty, idlest, wimpy, paltrier, little, venial, punier, puny, meager, drossy, zipper, shucker, weightless, paltry, half-pint, petty, piddling, small-time, worthless, common, measly, no-good, depthless
3 Syllables
stupidest, low-ranking, meaningless, atomic, senseless, gracile, light-footed, floatable, quotidian, futile, commonest, thick-headed, smattery, doubletalk, resultless, puerile, featherweight, doublespeak, lightfooted, frivolous, no-account, smalltime, finicking, unmeaning, minute, vanishing, valueless, shallower, time-wasting, subnormal
4 Syllables
commonplace, excusable, unimportant, nonessential, suboptimal, minor-league, miniscule, dispensable, incidental, gossamery, entry-level, microcosmic, inconsequent, evanescent, nongermane, unavailing, babylike, immaterial, remittable, negligible, unpurposed, irrelevant, everyday, nugatory, unnotable, microscopic, secondary, superficial, momentary, forgivable
5 Syllables
insignificant, inconsequential, undetectable, inappreciable, unconsequential, diminutive, imperceptible, exculpatory, vindicatory, imponderable, unobservable, unproductive
6 Syllables
one-dimensional, inconsiderable