Immature, Like Donald Glover's Stage Persona

This page is the CodyCross answer for the clue below from Performing Arts, Group 881, Puzzle 2 (Stagehands).

Question is: Immature, Like Donald Glover's Stage Persona

and the answer is: CHILDISH

Word Meaning:

CHILDISH — Immature in thought or behaviour.

Definitions from Wiktionary.