IPA: /ˈkæl.oʊ.nəs/
KK: /ˈkæl.oʊ.nəs/
The state of being inexperienced or immature, often referring to youth or lack of development.
His callowness was evident in the way he handled the difficult situation.
Callowness → It is formed from "callow" (of uncertain origin, possibly from Old English *ceald*, meaning young or immature) and the suffix "-ness" (meaning the state or quality of). The word "callowness" refers to the state of being immature or inexperienced.
Think of someone who is still 'young' or 'immature' — that's what callowness means, the quality of being inexperienced.