1. Not of sound mind, memory, or understanding; in law, not competent to go to trial
   - non compos mentis

See also: insane

• Madoqua
• madras
• madrasa
• madrasah
• Madreporaria
• madrepore
• Madrid
• madrigal
• madrigalist
• madrilene
• madriporian coral
• madroña
• madroño
• madwoman
• madwort
• Mae West
• Maeandra
• maelstrom
• maenad
• maestro
• Maeterlinck
• Mafa
• Maffeo Barberini
• maffia
• maffick