"foolishness," c. 1600, from silly + -ness; a reformation of seeliness, from Old English saelignes "happiness, (good) fortune, occurrence."
silken
silkworm
silky
sill
sillabub
silliness
silly
silo
Siloam
silphium
silt
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}