English dictionary
necessity
/n/I/'s/E/s/I/t/i/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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the condition of being essential or indispensable
Source: WordNet 3.0
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anything indispensable
Source: WordNet 3.0
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The quality or state of being necessary, unavoidable, or absolutely requisite; inevitableness; indispensableness.
Source: webster1913