Synonyms for "flippant": glib, facetious, flippant, impertinent, cheeky, saucy, irreverent, frivolous, superficial, shallow, thoughtless, tongue-in-cheek, fresh, impudent, pert, silly, playful, whimsical, jocular, funny, comic, droll, giddy, goofy, loony, madcap, zany, screwy, balmy, cracked, dotty, nutty, potty, soft, vacant, weak-minded, woolly-headed, batty, bonkers, barmy, crackers, cuckoo, daft, dippy, eccentric, insane, kooky, loco, loopy, oddball, off-the-wall, touched, unbalanced, wacky, way-out, weirdo, nutcase, fruitcake, screwball, crackpot, dingbat, loonie, wacko, wing nut, airhead, birdbrain, bonehead, chowderhead, dimwit, dope, dumbbell, dummy, fathead, goofball, idiot, knucklehead, lackwit, lamebrain, meathead, muttonhead, nitwit, noodlehead, numbskull, saphead, thickhead, woodenhead, blockhead, clod, donkey, dunce, imbecile, moron, nincompoop, ninny, simpleton, twit, yo-yo, nit, ninnyhammer, boob, cretin, oaf, stupe, dumdum, ding-a-ling, dipstick, doofus, dork, lummox, turkey, weenie, wimp, zero, zilch, nada, squat, bullshit, horseshit, crap, diddly-squat, twopenny-halfpenny, tuppence, zip, diddly, jack, jill, jot, modicum, ounce, particle, ray, scintilla, smidgen, spark, speck, tittle, trace, whit, crumb, fragment, iota, morsel, nubbin, scrap, shred, snatch, splinter, bite, droplet, grain, mite, minim, pinch, spot, stitch, dash, glimmer, hint, suggestion, tinge, vestige, whisper, blink, flicker, gleam, peek, peep, twinkle, wave, waft, wind, gust, puff, whiff, zephyr, bit, drop, lump, mote, nub, portion, quantum, scruple, shrink, snippet, swatch, whisk, atom, corpuscle, dot, item, point, speckle, element, feature, molecule, part, segment, share, piece, quota, ration, cut, allotment, allowance, chunk, division, installment, helping, percentage, plum, subdivision, sop, titbit, viand, dollop, slice, section, fraction, sector, hunk, wedge, constituent, factor, ingredient, member, unit, affiliate, branch, component, limb, arm, department, faction, office, organ, wing, detail, pigment, property, art, bureau, fellow, joint, knob, knot, radix, region, snip, widget, proportion, quantity, size, split, stock, angle, behalf, capacity, degree, district, domain, extent, locality, mood, neighborhood, quarter, role, side, sphere, territory, way, weight, aspect, quality, regard, respect, trait, attribute, characteristic, mark, peculiarity, thing, accessory, article, fixture, object, particular, whatsit, doodad, doohickey, gizmo, jigger, thingy, dingus, contraption, device, gadget, appliance, tool, utensil, implement, instrument, machine, mechanism, thingamajig, entity, body, being, creature, individuality, material, matter, substance, topic, issue, question, subject, theme, commodity, merchandise, product, ware, stuff, wealth, capital, estate, fortune, income, worldly goods, plunder, booty, loot, swag, pillage, prize, take, get, obtain, acquire, secure, procure, gain, win, earn, achieve, attain, realize, net, derive, extract, glean, garner, reap, harvest, cop, grab, nab, swipe, lift, nick, filch, pilfer, purloin, appropriate, expropriate, commandeer, confiscate, requisition, seize, usurp, wrest, annex, arrogate, assume, catch, contract, draw, gather, incur, pull, solicit, subscribe, suffer, take on, lay hold of, carry off, come by, fall to, find, snag, snap up, strike, chance upon, bring in, clear, collect, command, compass, concoct, effect, engender, execute, form, frame, muster, play, produce, work, land, relish, taste, enjoy, appreciate, savor, delight in, revel in, take pleasure in, be sweet on, care for, perceive, understand, comprehend, fathom, grasp, see, follow, absorb, assimilate, digest, discern, distinguish, make out, recognize, value, treasure, cherish, esteem, venerate, worship, adore, deify, lionize, revere, idolize, look up to, pay homage to, sing the praises of, vogue, mode, style, trend, rage, craze, fad, whim, fancy, desire, inclination, penchant, predilection, proclivity, propensity, affection, liking, love, fondness, partiality, attachment, weakness, yen, urge, impulse, itch, mania, obsession, passion, bent, bias, leaning, prejudice, tendency, turn, cup of tea, druthers, flair, frame of mind, groove, manner, mind, motif, persuasion, practice, preference.