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Back-formation

Creating a word by removing actual or supposed affixes

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Through Neologism, Root (linguistics) and Verb

For example, the noun resurrection was borrowed from Latin, and the verb resurrect was then back-formed hundreds of years later from it by removing the -ion suffix. This segmentation of resurrection into resurrect + ion was possible because English had examples of Latin words in the form of verb and verb+-ion pairs, such as opine/opinion. These became the pattern for many more such pairs, where a verb derived from a Latin supine stem and a noun ending in ion entered the language together, such as insert/insertion, project/projection, etc.

Similar phenomena

Back-formation may be similar to the reanalyses or folk etymologies when it rests on an erroneous understanding of the morphology of the longer word. For example, the singular noun asset is a back-formation from the plural assets. However, assets was not originally a plural; it is a loanword from Anglo-Norman asetz (modern French assez). The -s was reanalyzed as a plural suffix.

Back-formation varies from clipping – back-formation may change the word's class or meaning, whereas clipping creates shortened words from longer words but does not change the class or meaning of the word.

Words can sometimes acquire new lexical categories without any derivational change in form (for example, ship (in the nautical sense) was first a noun and later was used as a verb). That process is called conversion or zero-derivation. Like back-formation, it can produce a new noun or a new verb, but it involves no back-forming.

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