Meaning of the word "suck it up" in English

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

suck it up

US /sʌk ɪt ʌp/
UK /sʌk ɪt ʌp/

Idiom

to accept a difficult or unpleasant situation and deal with it without complaining

Example:
I know it's tough, but you just have to suck it up and get the job done.
He told himself to suck it up and stop complaining about the pain.