Is alcohol classified as a Stimulant, Depressant, Hallucinogen or Narcotic?

Alcohol is a depressant.

Depressants have effects such as slowing reaction time, poor concentration, and visual disturbances. Because alcohol slows reaction time, it is important that you avoid driving after you have consumed alcohol.

The use of sedatives while drinking alcohol is also dangerous, as it can slow your breathing and heart rate, and lead to death.