1. Not to be placated or appeased or moved by entreaty
   - grim, inexorable, relentless, stern, unforgiving, unrelenting

See also: implacable

• Bacteroidaceae
• bacteroidal
• Bacteroides
• Bactrian camel
• baculiform
• baculovirus
• bad
• bad block
• bad blood
• bad check
• bad cheque
• bad debt
• bad egg
• bad fairy
• bad faith
• bad guy
• bad hair day
• bad hat
• bad luck
• bad manners
• bad news
• bad person
• bad sector
• bad temper
• bad weather