The Collaborative International Dictionary of English v.0.48:

Soggy \Sog"gy\, a. [Compar. Soggier; superl. Soggiest.] [Cf.
   Icel. s["o]ggr damp, wet, or E. soak.]
   Filled with water; soft with moisture; sodden; soaked; wet;
   as, soggy land or timber.
   [1913 Webster]