cockneyize

Etymology

From cockney + -ize.

cockneyize means to pronounce with a cockney accent. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

verb

To pronounce with a cockney accent.“After some sensible remarks to the effect that, before a word beginning with an aspirated “h,” (“heroic,” “harangue,” and “historical,” for instance,) “a” should be used, and not “an,” unless you choose to cockneyize and weaken the aspiration of your “h's,” it is declared that we should avoid the error of not repeating the article, and that we must say, instead of "an ivory handle and silver blade”
To make vulgar and tasteless.“To sing such great statesmen and morals so pure, His first bard is Bowring—the second Tom Moore; Leigh Hunt was refused, as a cockneyized calf, And Rogers, for being too comic by half!”