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

 

worrier

 noun
noun
BrE BrE//ˈwʌriə(r)//
 
; NAmE NAmE//ˈwɜːriər//
 
 
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a person who worries a lot about unpleasant things that have happened or that might happen He’s such a worrier.
See the Oxford Advanced American Dictionary entry: worrier