English

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

 

unmentionable

 adjective
adjective
BrE BrE//ʌnˈmenʃənəbl//
 
; NAmE NAmE//ʌnˈmenʃənəbl//
 
[usually before noun]
 
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too shocking or embarrassing to be mentioned or spoken about an unmentionable disease
See the Oxford Advanced American Dictionary entry: unmentionable