Pessimist /(?)/

Pes·si·mist

Pessimist

n.
  1. One who advocates the doctrine of pessimism; -- opposed to optimist. (Metaph.)
  2. One who looks on the dark side of things.

Pessimist

a.
  1. Of or pertaining to pessimism; characterized by pessimism; gloomy; foreboding. (Metaph.)