breathless

/ˈbrɛθləs/
adjective
  1. Having difficulty breathing, usually because of physical exertion or strong emotion.
    • She was breathless after climbing the steep hill.
    • He arrived breathless at the finish line, gasping for air.
    • The news left him breathless with excitement.
  2. Causing someone to feel excited, amazed, or unable to breathe because of beauty or intensity.
    • Her performance was so powerful it left the audience breathless.
    • They watched the sunset in breathless silence.
    • The view from the mountaintop was breathless.