not have the faintest (notion)

not have the faintest (notion)

To have no knowledge or understanding about something. He doesn't have the faintest notion how hard it is to run a business. A: "Do you know where the car keys are?" B: "I haven't the faintest, sorry."
See also: faint, have, not

not have the faintest (idea)

have no idea. informal
See also: faint, have, not
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