Unsophisticated; clumsy or obvious.
Straightforward, candid, open, and frank.
Naive and trusting.
Demonstrating childlike simplicity.
Unable to mask one's feelings.
Lacking worldly experience, wisdom, or judgement; unsophisticated.
Produced in a simple, childlike style, deliberately rejecting sophisticated techniques.
Intuitive; designed to follow the way ordinary people approach a problem.
Not having been exposed to something.
A naive person; a greenhorn.