rare. [f. as prec. + -IST; cf. optimist.] One who holds the doctrine of agathism.
1830. Edin. Rev., L. 294. The existence of evil compels Dr. Miller to substitute the moderate title of Agathist for that of Optimist.
1841. Hor. Smith, Moneyed Man, III. x. 284. Advancing years have already made me an Agathist, a believer that every thing is for ultimate good.