WordNet (r) 3.0 (2006):
laid up adj 1: ill and usually confined; "laid up with a bad cold"Moby Thesaurus II by Grady Ward, 1.0:
20 Moby Thesaurus words for "laid up": accumulated, amassed, backlogged, bedfast, bedridden, collected, confined, down, garnered, gathered, hoarded, hospitalized, in childbed, in hospital, invalided, prostrate, sick abed, stockpiled, stored, treasured