- afflicted, stricken - grievously affected especially by disease
Antonym: well (indirect, via ill)
- smitten, stricken, struck - (used in combination) affected by something overwhelming; "conscience-smitten"; "awe-struck"
Antonym: unaffected (indirect, via affected)
- laid low, stricken - put out of action (by illness)
Antonym: well (indirect, via ill)