unknown

Not known; unidentified; not well known.

The Celebrity, by arts unknown, induced Mrs. Judge Short and two other ladies to call at Mohair on a certain afternoon when Mr. Cooke was trying a trotter on the track. The three returned wondering and charmed with Mrs. Cooke; they were sure she had had no hand in the furnishing of that atrocious house.

I suspect that this large and complex military railway system, shrouded in official secrecy for most of its operational life, remains unknown to many people.

A variable (usually x, y or z) whose value is to be found.

Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.

Had God walked close beside her into the unknown?

I think I learned more from my family than they did from me in the brief idyllic time we spent together. None of them much more than a mile from home, they carried the aura of a close-knit community as a shield against against the unknown.

A person of no identity; a nonentity.

How does it feel, / how does it feel? / To be on your own, / with no direction home / A complete unknown, / like a rolling stone

Khaleque, the landowner, who had contributed most of the money needed to transform the neglected burial-place of an unknown into a mazar, masked his pride and pleasure with difficulty. He solemnly declared: ‘Perhaps now we shall be forgiven for neglecting the saint all these years.’