IPA: /ˌɒpəˈtjuːnɪstɪk/
KK: /ˌɑːpərˈtunɪstɪk/
Describing someone or something that takes advantage of situations or opportunities, often in a way that is considered unethical or without regard for principles.
The opportunistic businessman made a profit by exploiting the crisis.
Opportunistic → It is formed from "opportunus" (from Latin, meaning favorable or suitable) and the suffix "-istic" (meaning pertaining to). The word "opportunistic" describes behavior that is favorable or advantageous, often taking advantage of circumstances.
Think of the word 'favorable' to remember that 'opportunistic' refers to behavior that takes advantage of favorable situations.