Invalid and Shut-in

Invalid noun - Someone who is incapacitated by a chronic illness or injury.

Shut-in is a synonym for invalid in sickly person topic. In some cases you can use "Shut-in" instead a noun "Invalid", when it comes to topics like sick person.

Nearby Words: invalidate, invalidated, invalidity, invalided, invalidation

Shut-in noun - Someone who is incapacitated by a chronic illness or injury.

Invalid is a synonym for shut-in in sickly person topic. You can use "Invalid" instead a noun phrase "Shut-in", if it concerns topics such as person being treated for medical problem.