noun
a word or expression which in form or use offends against contemporary standards of correctness or purity in a language
many writers consider irregardless a barbarism
Synonyms: corruption, impropriety, slangism, solecism, vernacularism, vernacularity, vulgarism
Related Word: neologism; colloquialism, foreignism; shibboleth; Goldwynism, Irish bull, malaprop, malapropism, spoonerism; caconym; error, lapse, misuse, slip