opportunistic
Pronunciation: /ɒpətjuːˈnɪstɪk/
adjective
- exploiting immediate opportunities, especially regardless of planning or principle: an opportunistic political lightweight
- Ecology (of a plant or animal) able to spread quickly in a previously unexploited habitat: opportunistic populations colonizing new substrates
- Medicine (of a microorganism or an infection caused by it) affecting patients only or chiefly when the immune system is depressed.
