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’ 不规则词形屈折,异干互补(如 went 作为 go 的过去式) Word OriginMiddle English: from Old French, from medieval Latin suppletio(n-), from supplere ‘fill up, make full’, from sub- ‘from below’ + plere ‘fill’.