(1):

(n.) A person untaught or uninformed; one unlettered or unskilled; an ignoramous.

(2):

(a.) Unacquainted with; unconscious or unaware; - used with of.

(3):

(a.) Unknown; undiscovered.

(4):

(a.) Resulting from ignorance; foolish; silly.

(5):

(a.) Destitute of knowledge; uninstructed or uninformed; untaught; unenlightened.