1. (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.

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