a. A further extension (jocular or vulgar) of WORSER a.

1

1752.  Foote, Taste, I. (1781), 8. I have heard, good Sir, that every Body has a more betterer and more worserer Side of the Face than the other.

2

1842.  Collectanea Glocestr., 283. Worser, worserer, worse.

3