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

 

boredom

 noun
noun
BrE BrE//ˈbɔːdəm//
 
; NAmE NAmE//ˈbɔːrdəm//
 
[uncountable] Boredom
 
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the state of feeling bored; the quality of being very boring I started to eat too much out of sheer boredom. Television helps to relieve the boredom of the long winter evenings. I noticed her short attention span and low boredom threshold (= she got bored very quickly). See related entries: BoredomExtra examples An MP3 player can relieve the boredom of running. I’d die of boredom if I lived in the country. Sorting mail is not a job for people with a low boredom threshold. Unemployment can drive you mad with boredom. I noticed her short attention span and low boredom threshold.
See the Oxford Advanced American Dictionary entry: boredom