WordNet sense 1 (tending to cause suspension of regular breathing):

breathtaking

WordNet sense 2 (creating or arousing excitement):

exciting

WordNet sense 3 (breathing laboriously or convulsively):

blown

WordNet sense 4 (not breathing or able to breathe except with difficulty):

dyspneal, dyspneic, dyspnoeal, dyspnoeic

WordNet sense 5 (appearing dead; not breathing or having no perceptible pulse):

inanimate, pulseless

WordNet sense 6 (no longer having or seeming to have or expecting to have life):

dead