Dérivation régressive

In etymology, back-formation is the process or result of creating a new word via inflection, typically by removing or substituting actual or supposed affixes from a lexical item, in a way that expands the number of lexemes associated with the corresponding root word. The resulting is called a back-formation, a term coined by James Murray in 1889. (Oxford English Dictionary Online preserves its first use of 'back-formation' from 1889 in the definition of to burgle; from burglar.) 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. 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. Back-formation may be particularly common in English given that many English words are borrowed from Latin, French and Greek, which together provide English a large range of common affixes.