Antonyms of adj callow

1 sense of callow

Sense 1
fledgling, unfledged, callow -- (young and inexperienced; "a fledgling enterprise"; "a fledgling skier"; "an unfledged lawyer")

INDIRECT (VIA inexperienced) -> experienced, experient -- (having experience; having knowledge or skill from observation or participation)

Similarity of adj callow

1 sense of callow

Sense 1
fledgling, unfledged, callow -- (young and inexperienced; "a fledgling enterprise"; "a fledgling skier"; "an unfledged lawyer")
       => inexperienced (vs. experienced), inexperient -- (lacking practical experience or training)