Definitions

unnecessary

[uhn-nes-uh-ser-ee] / ʌnˈnɛs əˌsɛr i /

ADJECTIVE

not required

Synonyms

STRONGEST

avoidable futile gratuitous irrelevant needless redundant superfluous unneeded useless worthless

WEAK

accidental additional beside the point casual causeless chance dispensable excess exorbitant expendable extraneous extrinsic fortuitous haphazard inessential lavish noncompulsory nonessential optional prodigal profuse random supererogatory surplus uncalled-for uncritical undesirable unessential unrequired wanton

Antonyms

STRONGEST

necessary needed valuable worthwhile

WEAK

indispensable required

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

There are strange choices, plateaus and unnecessary dramas, but now there is a mettle.

From The Wall Street Journal • Apr. 13, 2026

A lobbyist for San Diego Gas & Electric said he believed the audits were unnecessary because the commission was already reviewing the spending.

From Los Angeles Times • Apr. 9, 2026

Nepal's government has developed tough measures to stamp out insurance scams involving unnecessary helicopter rescues of trekkers, an official said Tuesday, a long-running racket threatening the country's vital tourism industry.

From Barron's • Apr. 7, 2026

This allows the system to plan more effectively and avoid unnecessary trial and error.

From Science Daily • Apr. 5, 2026

My mom put a little bell on his collar so we always knew where he was, which was unnecessary because he never left my side.

From "I Will Always Write Back" by Caitlin Alifirenka and Martin Ganda

Vocabulary lists containing unnecessary

List 3

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List 9

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"New Michigan Graduation Requirements Shortchange Many Students"

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