not have the faintest
Totally without knowledge
To not have the faintest is to have absolutely no knowledge or understanding of something—a shortened form of "not have the faintest idea" or "not have the faintest clue." The phrase emphasizes complete ignorance: I haven't the faintest what she's talking about, He didn't have the faintest how to fix it.
More common in British than American English.
- slightestLeast in degree
- obliviousLacking any awareness
- uninformedLacking necessary knowledge
- no ideaComplete lack of knowledge
- beats meAdmission of ignorance
haven't got a clue · beyond me · at sea · ignorance · have a clue · unaware · incognizant · clueless · unknowing · out to lunch · flummoxed · perplexed · mystified · baffled · in the dark · blind · stumped · nescient
knowledge and understanding
not have the faintestknow inside out
Understand something thoroughly
know like the back of one's hand · fully informed · know full well · have a handle on