Definition of callow adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈkæləʊ//
; NAmE NAmE//ˈkæloʊ//
(formal, disapproving)
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young and without experience synonym inexperienced a callow youth Word OriginOld English calu ‘bald’, of West Germanic origin, probably from Latin calvus ‘bald’. This was extended to mean ‘unfledged’, which led to the present sense ‘immature’.
See the Oxford Advanced American Dictionary entry: callow