featherless UK /ˈfɛðələs/US /ˈfɛðəɹləs/adjective 1phrases 1 adjective1 •Having no feathers.He eyed me with contempt: great featherless, half winged bird as I was, incomprehensible, contemptible, but awful. — 1911 Phrases with featherless featherless bipedA human being.