Definitions for ignoramusˌɪg nəˈreɪ məs, -ˈræm əs; -mi, -maɪ
Random House Webster's College Dictionary
ig•no•ra•musˌɪg nəˈreɪ məs, -ˈræm əs; -mi, -maɪ(n.)(pl.)-mus•es, -mi
an extremely ignorant person.
Origin of ignoramus:
1615–20; < L ignōrāmus we are ignorant
ignoramus, know nothing, uneducated person(noun)
an ignorant person
we are ignorant; we ignore; -- being the word formerly written on a bill of indictment by a grand jury when there was not sufficient evidence to warrant them in finding it a true bill. The phrase now used is, "No bill," "No true bill," or "Not found," though in some jurisdictions "Ignored" is still used
a stupid, ignorant person; a vain pretender to knowledge; a dunce
The Roycroft Dictionary
Any man who flatters himself that he is educated.