She naïvely believed everything he said.

She was too naïve to see through his lies.

She was often seen as a naïve in her youth.

The naïves were easily deceived by the con artist.

Her naïveness was endearing to everyone she met.

Naïve realism is the belief that our perception of the world is an accurate representation of reality.

The treatment-naïve patient showed significant improvement after starting therapy.

She took a semi-naïve approach to solving the problem.

The immunologically naïve individual had a strong reaction to the vaccine.

He is a drug naïve individual.