m) KEY NOUN:
- A tendency to expect the best possible outcome or dwell on the most hopeful aspects of a situation: "There is a touch of optimism in every worry about one's own moral cleanliness" (Victoria Ocampo).
- The doctrine, asserted by Leibnitz, that this world is the best of all possible worlds.
- The belief that the universe is improving and that good will ultimately triumph over evil.
, from New Latin optimum
, the greatest good
; see optimum