Covered with feathers; having the appearance or texture of feathers.
From 'feather' (Old English 'fether,' from Germanic roots) plus the '-ed' suffix to make an adjective. Originally just meant 'having feathers.'
Feathers are engineering marvels—each feather has thousands of branches with microscopic hooks that zip together, which is why a goose feather can insulate better than modern synthetics.
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