Shallow or weak-willed.
Newly emerged or hatched, juvenile.
Immature, lacking in life experience.
Lacking color or firmness (of some kinds of insects or other arthropods, such as spiders, just after ecdysis); teneral.
Unburnt.
Unfledged (of a young bird), featherless.
Of land: low-lying and liable to be submerged.
Bald, hairless, bare.
A callow young bird.
An alluvial flat.
A callow or teneral phase of an insect or other arthropod, typically shortly after ecdysis, while the skin still is hardening, the colours have not yet become stable, and as a rule, before the animal is able to move effectively.
Unsophisticated; clumsy or obvious.
Straightforward, candid, open, and frank.
Naive and trusting.
Demonstrating childlike simplicity.
Unable to mask one's feelings.