What is murks synonym?
If murks is being used as a slang word, it means something worthless. Otherwise it means a cloudy atmosphere.
A synonym of a synonym is an alternate word for one of the original word's synonyms: A synonym for "abundance" is "plenty." In that sentence the word "abundance" is the original, and "plenty" is the synonym. It follows that a synonym of the synonym is one of the synonyms for the word, "plenty;" for example, "copiousness."