1. Incapable of being ascended
   - unclimbable

Antonym: scalable

• Cancridae
• cancroid
• Cancun
• candela
• candelabra
• candelabrum
• candelilla
• candelilla wax
• candent
• candescent
• candid
• candid camera
• candida
• Candida albicans
• candidacy
• candidate
• candidature
• candidiasis
• candidly
• candidness
• candied
• candied apple
• candied citrus peel
• candied fruit
• candle