Labored breath is a medical term used to describe the difficulty of breathing due to an underlying medical condition. The crossword solutions for labored breath are PANT (4 letters) and RALE (4 letters). Panting is a type of rapid, shallow breathing that can be caused by physical exertion or anxiety. Rales are abnormal lung sounds that can be heard through a stethoscope and are caused by air passing through fluid in the lungs. Both panting and rales are signs of labored breath.