Not valid; not true, correct, acceptable or appropriate.
Suffering from disability or illness.
Intended for use by an invalid.
To make invalid or affect with disease.
To exempt from (often military) duty because of injury or ill health.
Involving reflection.
Reciprocal.
That reveals or shows; revealing; indicative of.
That reflects, or redirects back to the source.
Pondering, especially thinking back on the past.