not have the faintest idea

verb

To not know; to have no idea.

“Talking to him for a few minutes, it was clear he hadn't the faintest idea on what to do.”

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Meanings

verb

alternative not have the faintest

  1. informalTo not know; to have no idea.

    Talking to him for a few minutes, it was clear he hadn't the faintest idea on what to do.

Synonyms & antonyms

Also see
not have a cluenot have the first idea
Cite this entry
APA

not have the faintest idea. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/not%20have%20the%20faintest%20idea

MLA

“not have the faintest idea.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/not%20have%20the%20faintest%20idea. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “not have the faintest idea,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/not%20have%20the%20faintest%20idea.

Source: not have the faintest idea on Wiktionary, CC BY-SA 4.0.