overgrown schoolboy/childBAD BEHAVIOUR OR ACTIONSan adult who behaves like a child – used to show disapproval 大男生/大孩子〔用于形容孩子气的成人,含贬义〕 Stop acting like an overgrown schoolboy. 别再幼稚得像个大孩子似的。
overgrown schoolboy/child• Eddie is an overgrown schoolboy with a penchant for pulling fleshy faces.
→ overgrown schoolboy/child at overgrown(1)