not have the faintest (idea)
成語所屬單字faint
not have the faintest (idea) — 慣用語
1. To have no knowledge or understanding about something at all.
1.慣用語
釋義
一無所知
To have no knowledge or understanding about something at all.
例句
I don't have the faintest idea where my keys are.
Does Brian have the faintest clue about the plan?