cacodemon or cacodaemon /kak-ō-dēˈmən/

1. An evil spirit or devil
2. A nightmare (Shakespeare)

• semi-nude
• semio-
• semi-occasional
• semi-occasionally
• semiochemical
• semiochemicals
• semi-official
• semi-officially
• semiological
• semiologies
• semiologist
• semiologists
• semiology
• semi-opal
• semi-opals
• semi-opaque
• semiotic
• semiotically
• semiotician
• semioticians
• semiotics
• semioviparous
• semipalmate
• semipalmated
• semipalmation