Knarry

Going backwards we can produce 34 six-letter words: DUALLY, KNAGGY, KNARRY, KNOLLY, MEALLY, QUAGGY, QUARRY, SHAGGY, SHEAFY, SHELFY, SHELLY, SHERRY, SHOALY, SNAGGY, SNEERY, SNELLY, SNIFFY, SNUFFY, STAGGY, STARRY, STEELY, STILLY, STUFFY, STUGGY, THEALL, THEORY, WHALLY, WHEELY, WHERRY, WHIFFY, WHILLY, WHIRRY, WHOLLY, and WOOLLY.

First on the wal was peynted a forest, In which ther dwelleth neither man ne best, With knotty, knarry, bareyne trees olde, Of stubbes sharpe and hidouse to biholde, In which ther ran a rumbel in a swough, As though a storm sholde bresten every bough.