Callow (adjective)

1. Lacking experience and understanding; immature.
2. Lacking feathers; unfledged.

Origin:

Middle english calu, from old english calu "bald, naked, immature", of germanic origin; related to dutch kaal and german kahl.

Examples:

1. The young man is still callow and inexperienced.
2. She was surprised to see a callow bird perched on the windowsill.
3. The callow youth was easily taken in by the con artist.
4. He had a callow understanding of the situation.
5. The callow chick had not yet developed its feathers.