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necessary
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/ˈnesəs(ə)ri/- 1essential or needed in order to do something, provide something, or make something happen
I don’t want to be disturbed unless it’s absolutely necessary.
necessary for:basic foods regarded as necessary for health
necessary for:What type of clothing is necessary for survival at these altitudes?
it is necessary for someone to do something:It was necessary for all students to register a week in advance.
if necessary:I can take your place at the meeting tomorrow if necessary.
as necessary:We’ll be adding more workers as necessary (=as they are needed).
phrase
a necessary evil
This is the British English definition of necessary. View American English definition of necessary.
Change your default dictionary and thesaurus to American English.
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