Godan verb with 'mu' ending, Intransitive verb
to grow wild; to run to waste; to become degenerate
すさんだ生活を送るのは、命を縮めるようなものだ。Living life in the fast lane is like burning the candle at both ends. to become rough (of art, craft, etc.); to lose refinement; to deteriorate (of skill)
Godan verb with 'mu' ending, Auxiliary verb
to intensify (of wind, rain, etc.); to become more severe
usu. after -masu stem
Also written 進む【すさむ】、遊む【すさむ】