Definitions
1.AdjectiveUnknowledgeable or uneducated; characterized by ignorance.
2.AdjectiveNot knowing (a fact or facts), unaware (of something).
3.AdjectiveIll-mannered, crude."His manner was at best off-hand, at worst totally ignorant."
4.AdjectiveUnknown; undiscovered
5.AdjectiveResulting from ignorance; foolish; silly.
6.NounOne who is ignorant.