English

Definition of back-formation noun from the Oxford Advanced Learner's Dictionary

 

back-formation

 noun
noun
BrE BrE//ˈbæk fɔːmeɪʃn//
 
; NAmE NAmE//ˈbæk fɔːrmeɪʃn//
 
[uncountable, countable] (linguistics)
 
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a word formed by removing or changing the end of a word that already exists. For example, commentate is a back-formation from commentator.
See the Oxford Advanced American Dictionary entry: back-formation