Silly1. (n.) Happy; fortunate; blessed.
2. (n.) Harmless; innocent; inoffensive.
3. (n.) Weak; helpless; frail.
4. (n.) Rustic; plain; simple; humble.
5. (n.) Weak in intellect; destitute of ordinary strength of mind; foolish; witless; simple; as, a silly woman.
6. (n.) Proceeding from want of understanding or common judgment; characterized by weakness or folly; unwise; absurd; stupid; as, silly conduct; a silly question.
Thesaurus Entries
Pickwickian, absurd, airy, apish, asinine, balmy, batty, bedazzled, befooled, beguiled, benumbed, besotted, blockhead, bonehead, booby, brainless, buffoonish, catchpenny, childish, clod, clot, cockeyed, crazy, credulous, daffy, daft, daze, dazed, dazzled, dippy, dizzy, dolt, dope, dopey, doting, drip, dumb, dummy, dunce, empty, empty-headed, fatuitous, fatuous, featherbrained, flaky, flighty, flimsy, fond, fool, foolhardy, foolheaded, foolish, fribble, fribbling, frivolous, frothy, fuddled, futile, gaga, giddy, goofy, goose, groggy, gulled, harebrained, idiot, idiotic, idle, ignoramus, ignorant, illogical, imbecile, imbecilic, in a daze, inane, inept, infatuated, insane, irrational, irresponsible, jackass, jerk, knocked silly, kooky, laughable, light, light-headed, loony, ludicrous, mad, maudlin, mazed, moronic, muzzy, nerd, nincompoop, ninny, nitwit, nitwitted, nonsensical, nugacious, nugatory, numskull, nutty, off, otiose, pointless, poppycockish, preposterous, puerile, punch-drunk, punchy, rattlebrained, ridiculous, risible, rubbishy, sappy, scatterbrained, screwy, senseless, sentimental, shallow, silly Billy, silly ass, simpleton, skimble-skamble, slaphappy, slender, slight, stunned, stupefied, stupid, superficial, thoughtless, trashy, trifling, trite, trivial, twaddling, twaddly, twit, unintelligent, unreasonable, unwise, unwitty, vacuous, vain, vapid, wacky, weak-minded, wet, windy, witless, woozy