Not traditional, outside the mainstream, underground.
Relating to a choice between two or more possibilities.
Presenting two or more alternatives.
Other; different from something else.
A situation which allows a mutually exclusive choice between two or more possibilities; a choice between two or more possibilities.
One of several mutually exclusive things which can be chosen.
alternative rock
A non-offensive word or phrase that serves as a replacement for a word deemed offensive or unacceptable, though not as a euphemism.
The remaining option; something available after other possibilities have been exhausted.
beneath the surface of the ground; underground