not have the foggiest (idea)
informalto not know or understand something at all:
I didn't have the foggiest idea what he was talking about.
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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