Monopoly

Monopoly or polymono is a term that means one is open to having either a monogamous or polyamorous relationship. Someone might have a preference for one or the other, but still are open to any. Someone who identifies with this can be any sexual or romantic orientation as well.

Similar terms include ambiamorous, though those who identify as monopoly can have a preference.

History
The term was coined by Scratch user @Moon_Light321 and another who has asked to keep its information private at an unknown point.

Flag
The flag was coined by an unknown individual at an unspecified point. It is unknown if it has a meaning.