Answer: faintest

AnswerCrossword Clue
FAINTESTLeast, as an inkling
FAINTESTDimmest.
FAINTESTLeast distinct
FAINTEST"I haven't the ... idea!"
FAINTESTMost indistinct
faintestak, dizzy, and likely to faint
faintestgue 2a haven't the faintest idea
faintestFAINT, lacking strength
faintestlacking courage and spirit cowardly faint of heart