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.
Wavering; undecided.
Easily shaken; tottering; unsound.
Shaking or trembling.
Full of shakes or cracks; cracked.
Nervous, anxious.