IPA: /ˈfɛðərˌlaɪt/
KK: /ˈfɛðərˌlaɪt/
Something that is very light in weight, almost as light as a feather.
The featherlight fabric made the dress comfortable to wear all day.
Comparative: featherlighter
Superlative: featherlightest
Featherlight is formed from "feather" (from Old English *fether*, meaning a light, soft structure that covers birds) and "light" (from Old English *leoht*, meaning not heavy). The word describes something that is as light as a feather, emphasizing extreme lightness.
Think of a feather, which is very light, and remember that 'featherlight' means something that is extremely light, just like a feather.