1. No longer in existence; lost or especially having died out leaving no living representatives
   - extinct 
2. No longer existing or inaccessible through loss or destruction
   "its nonextant original was written on vellum"

See also: dead, nonexistent

• yellowbird
• yellowcake
• yellowed
• yellowfin
• yellowfin croaker
• yellowfin mojarra
• yellowfin tuna
• yellowhammer
• yellowish
• yellowish brown
• yellowish green
• yellowish pink
• yellowish-beige
• yellowish-gray
• yellowish-grey
• yellowish-orange
• yellowish-white
• Yellowknife
• yellowlegs
• yellowness
• Yellowstone
• Yellowstone National Park
• Yellowstone River
• yellowtail
• yellowtail flounder