unfledged

adjective4

1. •
   Not having feathers.

   • Ambition is first Minister of State; / Love's but a second in the Cabinet; / nor can he feather there his unfledg'd Shaft / But from Ambition's VVing: […] — 1728
2. •
   (figurative) Of a person: not yet fully grown or mature; lacking experience, like a novice or tyro; immature, inexperienced; hence, of or relating to youth.

   • But do not dull the palme vvith entertaine, / Of euery nevv vnfledg'd courage, […] — 1599
3. •
   (figurative) Of a thing: not yet fully developed; imperfect, incomplete, unfinished.

   • Yet they who watch your God-compelled return / May see your happy perihelion burn / Where the calm sun his unfledged planets broods. — 1849
4. •
   Of a bird: not yet having developed its feathers and wings and become able to fly.

   • [W]e poore vnfledg'd / Haue never vving'd from vievv o' th'nest; nor knovves^([sic – meaning know]) not / VVhat Ayre's from home. — 1611