1. The way of proper and honest behaviour
   - straight and narrow

Type of: path, way, way of life

• family Malacanthidae
• family Malpighiaceae
• family Malvaceae
• family Mammutidae
• family man
• family Manidae
• family Manteidae
• family Mantidae
• family Mantispidae
• family Marantaceae
• family Marattiaceae
• family Marchantiaceae
• family Marsileaceae
• family Martyniaceae
• family Mastodontidae
• family Mastotermitidae
• family Mayacaceae
• family medicine
• family Megachilidae
• family Megadermatidae
• family Megalonychidae
• family Megalosauridae
• family Megapodiidae
• family Megatheriidae
• family Melampsoraceae