say it: ah-pur-too-NI-stik
opportunistic is an adjective meaning "taking immediate advantage, often unethically, of any circumstance of possible benefit". It carries one recorded sense.
taking immediate advantage, often unethically, of any circumstance of possible benefit
Definitions, synonyms and semantic relations for opportunistic 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.