Meaning of the word "out of sorts" in English

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

out of sorts

US /aʊt əv sɔrts/
UK /aʊt əv sɔːts/
"out of sorts" picture

Idiom

slightly unwell or unhappy; not feeling well

Example:
She's been feeling a bit out of sorts since she caught a cold last week.
He's usually so cheerful, but today he seems a bit out of sorts.