“+ adjective
Etymology: Middle English unred, from un- (I) + red, past participle of reden to read
1. : not read : left unexamined
through sheer mischance the letter remained unread
2.
[ un- (I) + read ]
: lacking the experience or the benefits of reading : having no familiarity with a (specified) field
he seems to have been wholly unread in political theory — V.L.Parrington