returnless
adjective
re·turn·less
rə̇ˈtərnlə̇s
: allowing no return from or way out of : inescapable
an almost returnless depth of misery and crime 
Blackwood's
Blackwood's- brothers
- brothers-german
- brothers-in-arms
- brothers-in-law
- broths
- brotocrystal
- brotulae
- brotulas
- brotulid
- Brotulidae
- brotulidaes
- brouette
- brough
- brougham
- brougham-landaulet
- broughams
- broughs
- brought
- brought about
- brought around
- brought back
- brought back from the brink of
- brought before
- brought down
- brought forth