unsuspecting

Example:She was naive and believed everything her stepmother told her.

Definition:Simple and trusting and unsuspecting; lacking discernment and wisdom.

Example:Her innocent smile was enough to make him smile back.

Definition:Lacking awareness of the evil or impure aspects of human nature; not jaded or corrupt.

Example:He was duped by the fake lottery-winning message.

Definition:Taken in by a trick or deception; cheated.