spec. Applied to a literary work or other text, as a conventional expression of modesty or self-deprecation by its author (and typically appearing…

Characterized by or expressive of a lack of education or erudition; unlearned, unsophisticated.

Of things: Characterized by or showing ignorance of letters, or absence of learning or education; unlearned, unpolished.

Uneducated, untaught; simple, unsophisticated; †rude, boorish. Of instruments (esp. pen or pencil).

Illiterate, unlettered.