1. Of an organism's environment; least favourable for survival
   - pessimal

See also: worst

• BLU-82
• Blu-ray
• Blu-ray disc
• blub
• blubber
• blubber out
• blubberer
• blubbery
• blucher
• bludge
• bludgeon
• bludgeoner
• bludger
• blue
• blue African lily
• blue air
• blue angel
• blue ash
• blue baby
• blue blood
• blue book
• blue bugle
• blue bull
• blue cardinal flower
• blue cat