Definition of unbearable adjective from the Oxford Advanced Learner's Dictionary

 

unbearable

 adjective
adjective
BrE BrE//ʌnˈbeərəbl//
 
; NAmE NAmE//ʌnˈberəbl//
 
Describing annoying traits
 
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too painful, annoying or unpleasant to deal with or accept synonym intolerable The heat was becoming unbearable. unbearable pain He's been unbearable since he won that prize. opposite bearable See related entries: Describing annoying traitsExtra examples They found the heat unbearable. He’s been unbearable since he won that prize. Some of the victims were suffering unbearable pain.
See the Oxford Advanced American Dictionary entry: unbearable