worser

adjective or adverb

wors·​er ˈwər-sər 

archaic

: worse

I cannot hate thee worser than I do

—William Shakespeare

But in sooth Mr. Slope was pursuing Mrs. Bold in obedience to his better instincts, and the signora in obedience to his worser.

—Anthony Trollope

Word History

First Known Use

15th century, in the meaning defined above