the use of a word as a particular form of a verb when the word is not related to the main form of the verb, for example‘went’as the past tense of‘go’
NAmE//səˈplit̮ɪv//, NAmE//ˈsʌplət̮ɪv//
adjectiveSee suppletion in the Oxford Advanced Learner's DictionaryCheck pronunciation: suppletion