I Haven't the __ Idea, Clueless, No Inkling
This page is the CodyCross answer for the clue below from The 70's, Group 325, Puzzle 5 (Typewriters).
Question is: I Haven't the __ Idea, Clueless, No Inkling
and the answer is: FOGGIEST
Word Meaning:
FOGGIEST — superlative form of foggy: most foggy
Definitions from Wiktionary.