Bedridden BE is a term used to describe someone who is confined to their bed due to illness or injury. AIL, OYSTER, AILS, and ILL are all related to this term. AIL is a verb meaning to suffer from an illness or pain, while OYSTER is a type of mollusk that can BE eaten raw or cooked. AILS is the third person singular form of the verb AIL, meaning 'he/she/it AILS'. Lastly, ILL is an adjective meaning sick or unhealthy. Together, these words help to describe someone who is bedridden due to illness or injury.