unserious Definition

serious, earnest, childish, irresponsible, unintelligent, absurd, laughable, puerile, disingenuous, frivolous, unpatriotic, vacuous, sophomoric, cynical, unpresidential, unprofessional, idiotic, silly, flippant, imbecilic, dishonest, unworthy, preposterous, insincere, moronic, fatuous, incompetent, amateurish, inept, contemptible, feckless, vapid, ludicrous, ridiculous, nonsensical, illogical, tactless, clownish, stupid, asinine, unthoughtful, unbecoming, clueless, uninformed, impertinent, naive, immature, risible, effete, arrogant, infantile, unprincipled, otiose, hypocritical, egoistical, misguided, pathetic, untalented, apathetic, substanceless, irresponsive, jejune, unpolitical, uncouth, unprogressive, egocentric, delusory, mealymouthed, untrustworthy, fallacious, egotistic, simpleminded, myopic, beggarly, softheaded, hubristic, shortsighted, unreflective, meanspirited, insolent, inarticulate, brainless, uninteresting, mendacious, unamusing, inapt, outlandish, ahistorical, undiscerning, unconstructive, unmodern, visionless, unlikeable, pitiable, ungifted, uncreative, philistine, pollyannaish, dishonorable, demagogic,