| A | B |
| bad speech; a curse | malediction |
| bad-smelling | malodorous |
| a bad health condition; a disease | malady |
| a word used the wrong way, usu. with humorous results | malapropism |
| having bad feelings toward someone; hatred | malevolent |
| bad or harmful, producing death | malignant |
| desiring harm to someone | malicious |
| illness believed to be spread by bad air, but really spready by mosquitoes | malaria |
| performing one's duty in a bad way | malpractice |
| one who does wrong; a villain | malefactor |