1. Morally binding or necessary
   "it is incumbent on me to attend"

See also: irremissible, obligatory

• choroid
• choroid coat
• choroid plexus
• choroid vein
• choroidal artery
• choropleth map
• chortle
• chorus
• chorus frog
• chorus girl
• chorus line
• chosen
• chosen people
• chou
• Chou dynasty
• Chou En-lai
• chough
• chouse
• chicken Marengo
• chicken mousse
• chicken out
• chicken paprika
• chicken paprikash
• chicken provencale
• chicken purloo