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The morphological creation of a new word by removing an actual, supposed, or perceived affix from an older, more complex word.
Coined in 1889 by Scottish lexicographer Sir James Murray, the primary editor of the Oxford English Dictionary, 'back-formation' describes a reverse chronological process of word creation. In standard word formation, speakers add affixes to base roots (e.g. sing + -er becomes singer). In back-formation, the reverse occurs: speakers encounter a complex noun (often an agent noun ending in -er/-or or an action noun ending in -tion/-sion) and mistakenly analyze it as already containing an affix attached to a simpler base verb. To fill this perceived gap, speakers prune the pseudo-affix to invent a brand-new verb. Famous examples include 'editor' (which existed in English for over a century before 'edit' was back-formed in 1791), 'sculptor' before 'sculpt', 'television' before 'televise', 'burglar' before 'burgle', and 'enthusiasm' before 'enthuse'.
Test any English word to explore reverse affixation and morphological derivation:
Verified English words exemplifying back-formation with Scrabble scores
Linguistic definitions, etymological origins, and tournament usage
Clipping shortens a word without changing its grammatical category or meaning (e.g., examination becomes exam; both are nouns). Back-formation alters the word's grammatical category (usually transforming an existing noun into a new verb, such as editor into edit) by removing a perceived affix.