Unnecessary antonyms

What is the opposite word for Unnecessary?

Antonyms for unnecessary
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Definitions of Unnecessary
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unnecessarily
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Opposite words of unnecessary
Photo search results for Unnecessary
An elderly man sitting in front of computer with information that he is not needed anymore Computer tied with a black and yellow tape  Old sofa in green field behind mounts under bright sky Old discarded sofa in green field behind hillside under white cloudy sky in summertime Old unnecessary dirty couch on grass meadow near hill and growing plants under cloudy sky in summertime in daylight in countryside Brown and Gray Metal Tools
Image search results for Unnecessary
paper, wall, structure toy, machine, truck
Cite this Source
Antonyms for Unnecessary. (2016). Retrieved 2026, July 20, from https://thesaurus.plus/antonyms/unnecessary
Antonyms for Unnecessary. N.p., 2016. Web. 20 Jul. 2026. <https://thesaurus.plus/antonyms/unnecessary>.
Antonyms for Unnecessary. 2016. Accessed July 20, 2026. https://thesaurus.plus/antonyms/unnecessary.