Meaning of the word unsmiling in English

What does unsmiling mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

unsmiling

US /ʌnˈsmaɪ.lɪŋ/
UK /ʌnˈsmaɪ.lɪŋ/

Adjective

not smiling; serious or grim

Example:
The teacher had an unsmiling face as she handed back the test papers.
His unsmiling demeanor made it difficult to approach him.