名詞 back-formation:

1. a word invented (usually unwittingly by subtracting an affix) on the assumption that a familiar word derives from it

back-formation 或 back formation

n.（名詞）
A new word created by removing an affix from an already existing word, asvacuum clean from vacuum cleaner, or by removing what is mistakenly thought to be an affix, as pea from the earlier English plural pease.
逆構詞：從已存在的詞中去掉一個詞綴所形成的新詞，如vacuum clean 是從 vacuum cleaner 而來的，或者去掉那被錯誤地認為是詞綴的部分，如 pea 是從早期英語的復教 pease 而來的
The process of forming words in this way.
逆序構詞法：用這種方式形成新詞的過程