How many letters does the top answer for “befitting a young child” have?

The most common answer is childlike (9 letters).

Crossword clue: befitting a young child

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

childlike 9 letters wn-def

befitting a young child

childly 7 letters wn-def

befitting a young child

informal term for a young child 50% similar → kiddie, kiddy