Cryptic crossword clue
Sound of Merc in fog  4

The most common and most likely answer to this crossword clue is the 4 letter word MURK

M
U
R
K


Buddy explains!

The straight part
We know that "fog" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fog = murk.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does MURK mean?

MURK adjective
  1. Dark, murky
MURK noun
  1. Darkness, or a dark or gloomy environment.
MURK verb
  1. To make murky or be murky; to cloud or obscure, or to be clouded or obscured.
MURK verb
  1. To murder or seriously injure.

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