unnecessary Meaning in the Cambridge English Dictionary
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Meaning of “unnecessary” in the English Dictionary

"unnecessary" in British English

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unnecessaryadjective

uk   us   /ʌnˈnes.ə.ser.i/
B1 not ​needed or ​wanted, or more than is ​needed or ​wanted: I ​thought a lot of the ​violence in the ​movie was ​totally unnecessary. The ​idea is to ​kill the ​animal as ​quickly as ​possible without ​causing unnecessary ​suffering. An ​offensiveremark or ​action that is unnecessary could have been ​avoided: He just ​humiliated her in ​front of everyone - it was so unnecessary.
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unnecessarily
adverb uk   us   /-ɪ.li/
C1 We don't ​want to ​alarmpeople unnecessarily, but they should be ​aware of ​potentialdangers.
(Definition of unnecessary from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"unnecessary" in American English

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unnecessaryadjective

 us   /ʌnˈnes·əˌseər·i/
not ​needed or ​wanted, or more than is ​needed or ​wanted: unnecessary ​expenses The ​key to ​successfulinvesting is to ​avoid taking unnecessary ​risks.
unnecessarily
adverb  us   /ʌnˌnes·əˈser·ə·li/
I ​thought his ​explanation was unnecessarily ​complex.
(Definition of unnecessary from the Cambridge Academic Content Dictionary © Cambridge University Press)
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