The state of being unknown; a thing that is unknown.
The quality of being difficult to understand; a thing that is difficult to understand.
Darkness; the absence of light.
Regarded as relatively prestigious; often, considered the standard language or language variety, or a part of such a variety.
The quality of how good the reputation of something or someone is, how favourably something or someone is regarded.
To start over at an earlier point in a video game with some type of bonus or reward.