1. Exceedingly harmful
   - deadly, pernicious, pestilent 
2. Deadly or sinister
   - baleful

See also: maleficent, noxious

• malpractice
• malpractice insurance
• Malraux
• MALS
• malt
• malt liquor
• malt sugar
• malt vinegar
• malt whiskey
• malt whisky
• Malta
• Malta fever
• maltase
• malted
• malted milk
• Maltese
• Maltese cat
• maltese cross
• Maltese dog
• Maltese language
• Maltese lira
• Maltese monetary unit
• Maltese terrier
• maltha
• Malthus