NAIVE

or naïve adjective (~r; -est) Etymology: French naïve, feminine of naïf, from Old French, inborn, natural, from Latin nativus native Date: 1654 marked by unaffected simplicity ; artless , ingenuous , 2. deficient in worldly wisdom or informed judgment, not previously subjected to experimentation or a particular experimental situation , not having been exposed previously to an antigen , 3. self-taught , primitive , produced by or as if by a self-taught artist , see: natural ~ly or naïvely adverb ~ness noun