American Dictionary

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Definition opportunistic in American English

opportunistic adjective

adjective
/ˌɑpərtuˈnɪstɪk/
1

looking for and taking an opportunity, often in a way that is unfair or harms someone else

Example

Most of the robberies have been opportunistic crimes against older people who live alone.

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2

an opportunistic disease or infection is one that attacks people who are already sick and who have a very weak immune system

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Definition opportunistic in American English