1 : not known to exist; "things obscurely felt surged up from unknown depths"
2 : not known before; "used many strange words"; "saw many strange faces in the crowd"; "don't let anyone unknown into the house"
3 : very unusual; different in character or quality from the normal or expected; "a strange, other dimension...where his powers seemed to fail"- Lance Morrow
nom
1 : an unknown and unexplored region
2 : anyone who does not belong in the environment in which they are found