opportunistic

2 definitions • 4 examples

using a situation to get power or an advantage:

He made an opportunistic grab for power, which resulted in a civil war.

At half-time, United were leading with two opportunistic goals by Black.

(of an organism or infection) affecting someone when they are already ill or weak:

The most common opportunistic infection associated with AIDS is a type of pneumonia.

This opportunistic pathogen thrives in the oral environment of a host who is immunologically compromised.