Downer

/ˈdaʊnər/

Synonyms

  • drag
  • buzzkill
  • depressant
  • killjoy
  • wet blanket

Slang Meanings

A person who brings down the mood.
Don't invite him to the party; he's such a downer.
A substance that makes you feel sleepy or lethargic.
That pill was a major downer; I could barely keep my eyes open.