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unknown

adjective · noun

Simple meaning

Not known, identified or recognised by people.

Pronunciation

Say it like this:

uhnnohn

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US device voice
IPA pronunciation (US)

ənˈnoʊn

This word is pronounced essentially the same in American and British English, so one transcription covers both.

IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.

Word Review

Definition

Everyday modern meanings first, grouped by part of speech.

adjective

  1. sometimes postpositive

    Not known; unidentified; not well known.

noun

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

  2. algebra

    A variable whose values are solutions of an equation

  3. algebra

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

  4. A person of no identity; a nonentity.

Understand the Word

How this word is built, and what each part adds.

un- + knownunknown

Unknown means the information, person or place has not been discovered or recognised.

un-
lacking, without
known
recognised or understood

Prefix function , Lacking or without

Word at a Glance

Difficulty
A1 · Beginner (estimated)
Frequency
Very Common
Typical Use
Everyday English

Word Aura™

How this word commonly comes across.

Aura for this meaning

This meaning: (sometimes postpositive) Not known; unidentified; not well known.

Used this way, unknown is a reasonably familiar word that usually carries little praise or criticism of its own. It usually sounds natural in a wide range of settings.

Emotional tone
Neutral
Formality
Neutral
Intensity
Not strongly marked
How common
Moderately common
Connotation
No strong connotation
Usage feel
Neutral and straightforward

Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.

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Common Patterns and Combinations

How this word naturally appears with others.

Place

hitherto unknownunknown origin

Other combinations

unknown quantitypreviously unknownlargely unknownunknown reasonunknown numberunknown god

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Word Family

Related forms, grouped by how they connect.

Compound terms

Established multiword terms.

  • unknown quantitynounCompound term

    A factor in a given situation whose bearing and importance is not apparent.

  • unknown regionnounCompound term

    An unknown and unexplored region.

  • unknown soldiernounCompound term

    An unidentified soldier whose body is honored as a memorial.

More about this wordSynonyms, forms, origin

Synonyms

Sense: any thing or place

Antonyms

Sense: any thing or place

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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.