What is another word for "optimist"?

Roget's Thesaurus (1911) lists these synonyms for "optimist": adulator, affiance, air, airy, anchor, anticipation, aspiration, assumption, assurance, balm, beam, belief, bit, blue, bottom, box, bright, buoyancy, cheer, claqueur, clawback, clear, cloud, confidence, courtier, dawn, day, desire, dirty, doer, dream, earwig, encomiast, end, enthusiasm, eulogist, expectation, faith, fervent, flaneur.