dunderheaded Definition

moronic, idiotic, brainless, cretinous, imbecilic, lamebrained, fatuous, asinine, dimwitted, dopey, inept, feckless, witless, doltish, harebrained, dumb, oafish, sophomoric, pompous, simpleminded, nonsensical, silly, thickheaded, insipid, pathetic, vapid, cloddish, mealymouthed, substanceless, sanctimonious, unamusing, crass, execrable, weaselly, loathsome, captious, laughable, obtuse, obnoxious, overfamiliar, malcontented, glib, pinheaded, humorless, amoral, mirthless, risible, passionless, ludicrous, venal, bathetic, supercilious, smug, smarmy, shameless, unentertaining, orotund, onanistic, philistine, insufferable, shitty, pretentious, brattish, sucky, cynical, softheaded, demented, vainglorious, scrofulous, addlepated, excremental, comical, sycophantic, sleazy, preposterous, wimpy, goony, loony, egotistical, overdetermined, rebarbative, malfeasant, dilettantish, meanspirited, spineless, hacky, hyperbolized, whiney, boneheaded, blither, lumpen, heedless, bastardly, pythonesque, nauseating, zipless, unlikeable, brusk, unoriginal, contemptible,