The term 'charming in a childlike or naive way' can be described by the crossword solutions of WINSOME (7 letters), ADORABLE (8 letters), and ARTLESS (7 letters). WINSOME is an adjective that means attractive and pleasant in a gentle and endearing way. ADORABLE is an adjective that means inspiring great affection and delight due to being very attractive or endearing. ARTLESS is an adjective that means free from guile, innocence, and naivety. Together, these words describe someone who is charming in a childlike or naive way.