cockneyize

verb2

1. •
   To pronounce with a cockney accent.

   • The cockneyized form of Bethlehem, "Bedlam," has long been an accepted and significant word in our vocabulary. — 1887
2. •
   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! — 1849