childlike

/ˈtʃaɪldlaɪk/
adjective
  1. Having qualities that are typical of a child, such as innocence, trust, or simplicity, often in a positive way.
    • Her childlike wonder at the world made her a delightful travel companion.
    • He approached the problem with childlike curiosity, asking simple but deep questions.
    • The old man's childlike laughter filled the room with joy.
Antonyms
What does "childlike" mean? | whatsthatwordmean | whatsthatwordmean