Main entry: immature, unfledged
Definition: (of birds) not yet having developed feathers
Usage: a small unfledged sparrow on the window sill
Definition: (of birds) having developed feathers or plumage; often used in combination
Antonyms: feathered
Definition: having or covered with feathers
Main entry: unfledged, callow, fledgling
Definition: young and inexperienced
Usage: a fledgling enterprise; a fledgling skier; an unfledged lawyer
Antonyms: experienced, experient
Definition: having experience; having knowledge or skill from observation or participation
Main entry: fledgeless, unvaned, unfledged
Definition: (of an arrow) not equipped with feathers
Usage: shot an unfledged arrow
Antonyms: feathered
Definition: having or covered with feathers