1. in a way that shows difficulty breathing, especially from physical exertion
2. in a way that shows great excitement, anticipation, or suspense

Examples

• She ran breathlessly to catch the bus.
• The children waited breathlessly for the magician to reveal his trick.
• He climbed the stairs breathlessly after the long sprint.
• The audience listened breathlessly to the thrilling story.
• She spoke breathlessly about her upcoming vacation.
• The dog panted breathlessly after chasing the ball.
• They watched breathlessly as the tightrope walker performed.