English word ignorant comes from Old French ignorant

Detailed word origin of ignorant

Dictionary entry	Language	Definition
ignorant	Old French (fro)
ignorant	English (eng)	One who is ignorant. (obsolete) unknown; undiscovered. (slang) Ill-mannered, crude.. Not knowing (a fact or facts), unaware (of something).. Resulting from ignorance; foolish; silly.. Unknowledgeable or uneducated; characterized by ignorance.