say it: ah-pur-TOO-niz-uhm
opportunism is a noun meaning "taking advantage of opportunities without regard for the consequences for others". It is pronounced /ˌɑpɚˈtuˌnɪzəm/ — ah-pur-TOO-niz-uhm. It carries one recorded sense.
taking advantage of opportunities without regard for the consequences for others
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 opportunism 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.