Meaning of the word unutterable in English

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

unutterable

US /ʌnˈʌt̬.ɚ.ə.bəl/
UK /ʌnˈʌt.ər.ə.bəl/

Adjective

too bad to be expressed in words; extreme:

Example:
unutterable boredom