childlike

adj

1. Innocent and trustful; credulous; artless.

   “According to the prevailing Danish rationale, Greenlanders were naïve and childlike, in need of protection and incapable of governing themselves.”

2. Of, like, or suitable for a child.

   “Even Mario is given childlike mannerisms – running open-armed like a fearless toddler, whooping with delight – to convey playful innocence.”