Pes"si*mist (?), n. [L. pessimus worst: cf. F. pessimiste.] 1. (Metaph.) One who advocates the doctrine of pessimism; -- opposed to optimist.

2. One who looks on the dark side of things.

{ Pes"si*mist (?), Pes`si*mis"tic (?), } a. (Metaph.) Of or pertaining to pessimism; characterized by pessimism; gloomy; foreboding. "Giving utterance to pessimistic doubt." Encyc. Brit.