ignorant

adjective

1. 1

   uneducated in the fundamentals of a given art or branch of learning; lacking knowledge of a specific field

   she is ignorant of quantum mechanics

   he is musically illiterate

2. 2

   uneducated in general; lacking knowledge or sophistication

   an ignorant man

   nescient of contemporary literature

3. 3

   unaware because of a lack of relevant information or knowledge

   he was completely ignorant of the circumstances

   an unknowledgeable assistant