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

 

unpleasantness

 noun
noun
BrE BrE//ʌnˈplezntnəs//
 
; NAmE NAmE//ʌnˈplezntnəs//
 
[uncountable]
 
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bad feeling or arguments between people I’d rather avoid any unpleasantness with the neighbours.
See the Oxford Advanced American Dictionary entry: unpleasantness