Source : Webster's Revised Unabridged Dictionary (1913)

Insanitary \In*san"i*ta*ry\, a.
   Not sanitary; unhealthy; as, insanitary conditions of
   drainage.

Source : WordNet®

insanitary
     adj : not sanitary or healthful; "unsanitary open sewers"; "grim
           and unsanitary conditions" [syn: {unsanitary}, {unhealthful}]
           [ant: {sanitary}]