unknown

Meaning

Adj

Not known; unidentified; not well known.

Noun

1. A variable (usually x, y or z) whose value is to be found.
2. Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.
3. A person of no identity; a nonentity

Verb

past participle of unknow

Pronounced as (IPA)

/ʌnˈnəʊn/

Etymology

From Middle English *unknowen, *uniknowen, uniknowe, from Old English unġecnāwen (“unknown”), equivalent to un- + known.

Sentences

When she saw the unknown object bobbing up and down the edge , she was absolutely horrified .

The contruction of a new theme park is immediately halted for an unknown reason .