downer

(do̵unər)

noun

  1. any depressant drug, as a tranquilizer or barbiturate
  2. ☆ a depressing experience, person, etc.

See downer in American Heritage Dictionary 4

noun
Slang
  1. A depressant or sedative drug, such as a barbiturate or tranquilizer.
  2. One that depresses, such as an experience or person.

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