1. Unpleasantly
   - painfully

See also: distressing

• genus Cryptocercus
• genus Cryptocoryne
• genus Cryptogramma
• genus Cryptomeria
• genus Cryptoprocta
• genus Cryptotermes
• genus Cryptotis
• genus Ctenocephalides
• genus Ctenocephalus
• genus Cuculus
• genus Cucumis
• genus Cucurbita
• genus Culcita
• genus Culex
• genus Cuminum
• genus Cuniculus
• genus Cuon
• genus Cupressus
• genus Curcuma
• genus Cursorius
• genus Curtisia
• genus Cuscuta
• genus Cuterebra
• genus Cyamopsis
• genus Cyamus