Meaning of the word "one and all" in English

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

one and all

US /wʌn ænd ɔːl/
UK /wʌn ænd ɔːl/

Idiom

everyone; all people without exception

Example:
The invitation was extended to one and all.
He thanked one and all for their support.