Unfamiliar, not yet part of one's experience.
Outside of one's current relationship; unfamiliar.
Not normal; odd, unusual, surprising, out of the ordinary.
Having the quantum mechanical property of strangeness.
Not belonging to one.
Of an attractor: having a fractal structure.
Sex outside of one's current relationship.
Not known; unidentified; not well known.
A variable (usually x, y or z) whose value is to be found.
A person of no identity; a nonentity
Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.