immature
/ɪməˈtjʊə(ɹ)/ adjective B2- Not fully formed or developed; not grown.
- Childish in behavior; juvenile. · You're only young once, but you can be immature the rest of your life.· The man was immature for throwing a tantrum.
Other matches
Learn immature in real texts
With a free account, hover any word in the library for its meaning, hear it read aloud, save words for review timed to your memory, and see how much of each book you already know.