Crossword Genius

It doesn’t make for good viewing (3)

Ross

I believe the answer is:

fog

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'it doesn't make for good viewing' is the definition.
The definition suggests a singular noun which matches the answer.

This is the entire clue.

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(Other definitions for fog that I've seen before include "Confusion" , "Bank restricting visibility" , "Miasma" , "Impenetrable mist" , "second growth of grass" .)

I've seen this clue in the Evening Standard.
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