have no idea

have no idea

To be completely unaware of or know no information about something. A: "Is Sally off today?" B: "Oh, I have no idea. Ask Elaine, she'll know."

See also: have, idea, no

have no iˈdea

,

not have the first, slightest, etc. iˈdea

not know something at all; not know how to do something at all: I’ve no idea what time it is. ♢ Don’t ask him to mend it; he hasn’t got the first idea about cars.

See also: have, idea, no