to have no knowledge of or no information about something.
'Do you know where Anna is? ' 'I haven't the faintest.'I haven't the faintest idea what you're talking about.
(often + question word)
(redirected from have the faintest)
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 don't have the faintest, sorry."