say it: AHP-tuh-miz-uhm
optimism is a noun meaning "the optimistic feeling that all is going to turn out well". It carries 2 recorded senses.
the optimistic feeling that all is going to turn out well
a general disposition to expect the best in all things
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for optimism come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.