1. (a.) Immature; lacking experience or maturity; green; as, a callow youth\.

2. (a.) Destitute of feathers; naked; unfledged.

3. (n.) A kind of duck. See Old squaw.

a novice at a stranger to adolescent arrested at half cock awkward blankminded budding defective deficient dewy dumb embryonic empty empty-headed ever-new evergreen failing firsthand fledgling fresh gauche green green as grass groping growing guileless half-baked half-cocked half-grown hypoplastic ignorant ill-digested immature impubic in arrear in arrears in default in short supply inadequate inane incomplete inexperienced infant ingenuous innocent intact juicy juvenile know-nothing lacking maiden maidenly minor missing naive needing neoteric nescient nestling new new to new-fledged original part partial patchy pristine raw ripening sappy scant scanty scrappy sempervirent short shy simple sketchy strange to tender tentative unaccustomed to unacquainted unacquainted with unadult unapprized unbeaten uncomprehending unconversant unconversant with underage underdeveloped underripe undeveloped unenlightened unexperienced unfamiliar unfamiliar with unfledged unformed ungrown unhandled unilluminated uninformed uninitiated uninitiated in unintelligent unknowing unlicked unmatured unmellowed unposted unpracticed unpracticed in unripe unseasoned unskilled in unsophisticated unsure untouched untried untrodden unused unused to unversed unversed in vacuous vernal virgin virginal wanting young youthful