1. Incapable of being perceived or known
   - incognizable, incognisable [Brit]

See also: imperceptible, unperceivable

• chokepoint
• choker
• chokey
• choking
• choking coil
• chokingly
• choky
• cholangiography
• cholangitis
• cholecalciferol
• cholecystectomy
• cholecystitis
• cholecystokinin
• cholelithiasis
• cholelithotomy
• choler
• cholera
• cholera infantum
• cholera morbus
• choleraic
• choleric
• cholestasis
• cholesterin
• cholesterol
• cholesterosis cutis