1. Provoking horror
   "war is beyond all words horrible"
   - atrocious, frightful, horrifying, ugly

See also: alarming, horribly

• genus Crateva
• genus Crax
• genus Crepis
• genus Crescentia
• genus Crex
• genus Cricetus
• genus Crocethia
• genus Crocodilus
• genus Crocodylus
• genus Crocus
• genus Crocuta
• genus Cronartium
• genus Crotalaria
• genus Crotalus
• genus Crotaphytus
• genus Croton
• genus Crotophaga
• genus Cryptacanthodes
• genus Cryptobranchus
• genus Cryptocercus
• genus Cryptocoryne
• genus Cryptogramma
• genus Cryptomeria
• genus Cryptoprocta
• genus Cryptotermes