The word naïve refers to lack of experience, wisdom, or judgment. Naïve also relates to the immaturity of a person. A naïve person can be easily misled or cheated. Both of these words infer a particular inclination to believe anything without considerable proof, no matter how unbelievable it might be. The words naïve and naivety are both from French and originally from a Latin word that implies childishness.

Naïve is an adjective which refers to lacking something, or something is missing, such as wisdom or experience. Naivety demonstrates a lack of understanding, often in a context where one neglects facts in favor of moral idealism. It means the gullible can be easily deceived.