goose
Dweeb? It is twerp
tomfool
You can describe a person using the letter s by silly.
dolt
S. A sympathy letter or a sales letter; even a stalking letter, a sad letter, or a silly letter; a small letter; then there's the scarlet letter.
dipstick, imbecile, numbnuts, peabrain, goofball
silly! or weird
silly and high
Silly bandz are rubber bracelets that are shaped like animals and objects. Also there is letters of the alphabet and numbers.
Silly Bandz, They wanted to improve the name from silly bands so they used the next best letter, Z
funnyCute
A 10-letter word for a foolish person is "nincompoop." It is often used to describe someone who is silly or lacking in good judgment. The term has a lighthearted tone, making it suitable for informal contexts.