An Oligopoly is the act of participating in a monopoly with multiple companies. Behind closed doors the companies will usually agree not to compete with each other in certain regions of a country, state, or city. This can lead to the severe spike in prices without the need for compensation due to competition. This act, while royally fucking a consumer, can provide access to a previously illegal business practice with zero negative repercussions and an immunity to any legal action being taken against the companies in question.
A form of government in which the candidate/party you didn't vote for governs. Suck it up.
"Dammit, I wanted Candidate X, but instead I got Candidate Y. I hate Candidate Y! He does those things I don't like! This is an outrage! This is... is... Oligarhy!!1!"