1. Vitally important
   "a life-and-death struggle"
   - life-or-death

See also: crucial, important

• earring
• earshot
• earsplitting
• earth
• earth almond
• earth color
• earth colour
• earth goddess
• earth mother
• earth science
• earth tremor
• earth up
• earth wax
• Earth's crust
• Earth's surface
• earth-closet
• earth-god
• earth-nut pea
• Earth-received time
• earth-shattering
• earthball
• earthborn
• earthbound
• earthen
• earthenware