sick·o 
(sĭkō)
(sĭkō)n. pl. sick·os
Slang
Slang
An emotionally disturbed person, especially one who displays morally repugnant behavior or attitudes.
[From SICK1.]
- graveside
- gravesite
- gravestone
- graveyard
- graveyard shift
- gravid
- gravidity
- gravidly
- gravidness
- gravimeter
- gravimetric
- gravimetrically
- gravimetry
- graving dock
- gravisphere
- gravitas
- gravitate
- gravitater
- gravitation
- gravitational
- gravitational collapse
- gravitational constant
- gravitational force
- gravitational interaction
- gravitational lens