breathless

not breathing or able to breathe except with difficulty

• “breathless at thought of what I had done”
• “breathless from running”
• “followed the match with breathless interest”

tending to cause suspension of regular breathing

• “a breathless flight”
• “breathtaking adventure”

appearing dead; not breathing or having no perceptible pulse

• “an inanimate body”
• “pulseless and dead”