Here are the possible solutions for sink to a lower level clue
Answer
Clue
Relevancy
subside
Clue
Sink to a lower level
ptomaineconcourse
Clue
Warning sign at a train station's food court? (NOTE: The original sign, without my additions, actually exists. It's in Grand Central Terminal in NYC, on the lower level — the food court level. The sig
ahh
Clue
Sound after "Lower ... lower ... that's it!"
bargainbasement
Clue
Lower-level shopping site
beneath
Clue
At a lower level (than)
Definition
under, also ANEATH, NEATH, UNNEATH
cholesterol
Clue
Level many seek to lower
Definition
a sterol occurring in all body cells and involved in the transport of fats through the bloodstream