Definitions
1.nounOne who is ignorant.
2.adjectiveUnknowledgeable or uneducated; characterized by ignorance.
3.adjectiveNot knowing (a fact or facts), unaware (of something).
4.adjectiveIll-mannered, crude."His manner was at best off-hand, at worst totally ignorant."
5.adjectiveUnknown; undiscovered
6.adjectiveResulting from ignorance; foolish; silly.