1. Incapable of being mitigated
   "stern and unmitigable accusations"

See also: implacable

• battleful
• battleground
• battlement
• battlemented
• battler
• battleship
• battlesight
• battlewagon
• battue
• batty
• Batu Khan
• batwing
• bauble
• baud
• baud rate
• Baudelaire
• Bauhaus
• Bauhinia
• Bauhinia monandra
• Bauhinia variegata
• baulk
• baulk-line
• baulker
• baulking
• baulky