In linguistics, an eggcorn is an idiosyncratic substitution of a word or phrase for a word or words that sound similar or identical in the speaker’s dialect. The new phrase introduces a meaning that is different from the original, but plausible in the same context (“old-timers’ disease” for “Alzheimer’s disease”). This is as opposed to a malapropism, where the substitution creates a nonsensical phrase. Classical malapropisms generally derive their comic effect from the fault of the user, whilst eggcorns are errors that exhibit creativity or logic. Eggcorns often involve replacing an unfamiliar, archaic, or obscure word with a more common or modern word (“baited breath” for “bated breath”).

The term “eggcorn” was coined by Geoffrey Pullum in September 2003, in response to an article by Mark Liberman on the website Language Log, a blog for linguists. Liberman discussed the case of a woman who substitutes the phrase egg corn for the word acorn, arguing that the precise phenomenon lacked a name; Pullum suggested using “eggcorn” itself.

• labtop instead of laptop
• mallware instead of malware
• cusrser instead of cursor
• aohell instead of AOL