Degenerate psychiatrist Human Resources shunted out (4)
I believe the answer is:
sink
'degenerate' is the definition.
(thesaurus)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for sink that I've seen before include "Go down; wash basin" , "Fall to the bottom" , "Plumbing fixture" , "Succeed in putting" , "Drop N flag" .)