adjective

gasping for breath, typically due to exertion.

the climb left me breathless

out of breath,panting,puffing,gasping (for breath),huffing and puffing,puffing and blowing,puffed,puffed out,gulping (for breath),wheezing,wheezy,choking,winded,short of breath,short-winded,exhausted,tired out,out of puff