adj.
1.not known
2.being or having an unknown or unnamed source
3.not known to exist
4.not famous or acclaimed
5.not known before unknown n.
1.an unknown and unexplored region
2.anyone who does not belong in the environment in which they are found
3.a variable whose values are solutions of an equation
Idiom of the Day
lead (someone) by the nose
to have full control of someone, to make or persuade someone to do what you want
The man is not very aggressive and lets his boss lead him by the nose.