"wavy ornamental edging," 1801 (with a doubtful attestation from 1590s), of uncertain origin despite much speculation [see OED]; figurative sense of "useless ornament" first recorded 1893. Related: Frills.
frill (v.)
"to furnish with a frill," 1570s, from frill (n.) "ornamental bordering." Related: Frilled.
frightful
frigid
frigidity
frigorific
frijoles
frill
frillery
frills
frilly
fringe
frippery
