Morpheme
Sil
Type
bound base
Denotation
good, fortunate, happy
Etymology
Middle English seely, sēlī, from sel, sele; Old English sǣliġ, from sǣl, *sǣle (unsǣle)
Evidence
sillier, sillies, silliest, sillily, silliness, silly
Notes
semantic evolution of silly from lucky to innocent to naive to foolish
