Invalid
Part of speech: adjective
Definition: Not valid; not true, correct, acceptable or appropriate. Intended for use by an invalid.
Part of speech: verb
Definition: To exempt from duty because of injury or ill health.
Part of speech: noun
Definition: One who is confined to home or bed because of illness, disability or injury Any person with a disability.
Example sentence: There is no reason why any legitimate caller should be spoofing an unassigned or invalid number. And providers shouldn't be sued for doing the right thing by blocking illegitimate spoofing.
Shut-in
Part of speech: adjective
Definition: Confined to a location, as by infirmity or illness.Introverted.
Part of speech: noun
Definition: A person confined to a location, as by illness or infirmity.