Meaning of the word seriousness in English

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

seriousness

US /ˈsɪr.i.əs.nəs/
UK /ˈsɪə.ri.əs.nəs/

Noun

the state of being very bad or severe:

Example:
I don't think he has any idea of the seriousness of the situation.