1) Amateur 2) Cause to disbelieve 3) Cause to unlearn 4) Ignorant 5) Inexperienced 6) Inexpert 7) Lacking in schooling 8) Lacking instruction 9) Uneducated 10) Unqualified 11) Unschooled 12) Untutored Found on https://www.crosswordclues.com/clue/untaught