Definition of expediency noun from the Oxford Advanced Learner's Dictionary

 

expediency

 noun
noun
BrE BrE//ɪkˈspiːdiənsi//
 
; NAmE NAmE//ɪkˈspiːdiənsi//
 
[uncountable]
 
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the fact that an action is useful or necessary for a particular purpose, although it may not be fair or right He acted out of expediency, not principle.