天真爛漫

Idiom

 * 1) innocent and unaffected; simple and artless

Etymology
Compound of 🇰🇲.

Adjective

 * 1) innocent, simple
 * 2) unsophisticated, artless
 * 1) unsophisticated, artless

Noun

 * 1) innocence
 * 2) unsophistication, naïveté