incubus /inˈ or ingˈkū-bəs/

1. A devil supposed to assume a male body and have sexual intercourse with women in their sleep (cf succubus)
2. A nightmare
3. Any oppressive person, thing or influence

• kail-pat
• kail-pot
• kail-runt
• kail-runts
• kails
• kailyaird
• kailyard
• Kailyard school
• kaim
• kaimakam
• kaimakams
• kaims
• kain
• kaing
• kainga
• kaingas
• kainite
• kainites
• kainogenesis
• Kainozoic
• kains
• kais
• kaisar-i-Hindi
• kaiser
• kaiserdom