Definition of imperfection noun from the Oxford Advanced American Dictionary

 

imperfection

 noun
noun
NAmE//ˌɪmpərˈfɛkʃn//
 
[countable, uncountable]
 
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a fault or weakness in someone or something They learned to live with each other's imperfections. The only slight imperfection in the painting is a scratch in the corner.
See the Oxford Advanced Learner's Dictionary entry: imperfection