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

 

irritability

 noun
noun
BrE BrE//ˌɪrɪtəˈbɪləti//
 
; NAmE NAmE//ˌɪrɪtəˈbɪləti//
 
[uncountable]
 
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the tendency to get annoyed easily Lack of vitamin B in the diet causes irritability.