exempt in WordNet English dictionary

1. grant exemption or release to
   "Please excuse me from this class"
   excuse  relieve  let off  exempt 
   
2. grant relief or an exemption from a rule or requirement to
   "She exempted me from the exam"
   exempt  relieve  free 
   

1. (of persons) freed from or not subject to an obligation or liability (as e.g. taxes) to which others or other things are subject
   "a beauty somehow exempt from the aging process"; "exempt from jury duty"; "only the very poorest citizens should be exempt from income taxes"
   exempt 
   
2. (of goods or funds) not subject to taxation
   "the funds of nonprofit organizations are nontaxable"; "income exempt from taxation"
   nontaxable  exempt