1 definition by Knickerbøcker
Someone who selfishly exploits or takes full advantage of any situation involving free food or items.
The opportunistic omnivores in the office will eat anything we leave unattended in the kitchen, and now those opportunivores have eaten all the Christmas cookies.
That opportunistic jerk took all the free condoms from the clinic, they're such an opportunivore.
That opportunistic jerk took all the free condoms from the clinic, they're such an opportunivore.
by Knickerbøcker December 1, 2009