1. Extremely
   "infernally clever"
   - hellishly

See also: infernal

• kaury
• kava
• kavakava
• Kavir Desert
• Kavrin
• Kaw River
• kawaka
• Kawasaki disease
• kay
• Kay Boyle
• kayak
• kayaker
• kayo
• kayoed
• Kayser-Fleischer ring
• kazaa
• Kazak
• Kazakh
• Kazakhstan
• Kazakhstani
• Kazakhstani monetary unit
• Kazakstan
• Kazan
• Kazimir Malevich
• Kazimir Severinovich Malevich