unlectured

adjective2

1. •
   Of a person: not instructed by lectures.

   • Her eyes the movements of her heart declare, For what she dares to be, she dares appear; Unlectured in dissimulation's school, To smile by precept, and to blush by rule, […] — 1827
2. •
   (no longer used) Of a subject or topic: not taught.

   • Lorenzo, hast thou ever weigh'd a sigh, Or studied the philosophy of tears? (A science yet unlectured in our schools :) […] — 1743