not know the half of it
also have not heard the half of it informalIf someone does not know the half of it, they know that a situation is bad but do not know how serious it is:
"I hear things aren't going too well at work." "You don't know the half of it!"
Thesaurus: synonyms and related words
Unaware
- be in the dark idiom
- be on another planet idiom
- benighted
- blind
- blind spot
- blissful
- fail
- faint
- ignorance is bliss idiom
- ignorant
- ill-informed
- illiterate
- in blissful ignorance idiom
- lost
- unbeknownst
- unconscious
- uneducated
- unfamiliar
- unknowing
- unnoticed
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