Meaning of the word "not know the half of it" in English

What does "not know the half of it" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

not know the half of it

US /nɑt noʊ ðə hæf əv ɪt/
UK /nɑt noʊ ðə hæf əv ɪt/
"not know the half of it" picture

Idiom

1.

to not know the full extent or all the details of a situation, especially one that is more serious or complicated than it appears

Example:
You think my job is tough? You don't know the half of it!
She's been through a lot, but her friends don't know the half of it.
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