foulsome

adjective1

1. •
   Characterised or marked by foulness or filth; filthy; (by extension) wretched.

   • “Hah. And a good thing it is that you have. It's almost time for us to leave this foulsome planet, and we'll be needing all the help we can muster.” “It's not a foulsome planet!” Rita snapped. — 1983