A person ignorant about a given subject.
An illiterate person, one either not able to read and write or not knowing how.
Unable to read and write.
Not conforming to prescribed standards of speech or writing.
Having less than an expected standard of familiarity with language and literature, or having little formal education.
Ignorant in a specified way or about a specified subject.
A generally ignorant person.
A common person.
Layperson, someone who is not an ordained cleric or member of the clergy.
Lay-sister or lay-brother, person received into a convent of monks, following the vows, but not being member of the order.
A person who is untrained or lacks knowledge of a subject.
Someone who is not a professional in a given field.