naiv

Too ready to believe people or ideas because of a lack of experience, information, or critical judgment.

Showing a simple, childlike, or unsophisticated quality, especially in personal style, opinions, or creative work.

In art, produced in a simple, childlike style that ignores traditional rules of perspective and proportion, typically by an artist without formal training.

Used about a method, theory, or solution that is simple and straightforward but ignores important complexities such as efficiency, security, or realistic conditions.

Showing innocent, trusting simplicity, often because of lack of experience or awareness of how people may deceive or take advantage of others.

Having unrealistic, overly hopeful, or naive expectations.

Lacking experience of the bad or unpleasant things in life, especially in a sexual or moral sense; showing simplicity or moral purity, sometimes in a naive way.