When something or someone is "breathless," it means they are out of breath or unable to breathe properly because of exhaustion, excitement, or surprise. Full definition
Tinker Tailor Soldier Spy is a tense and dense espionage thriller, that weaves its story like a tightening noose, until the audience is left breathless in the cinema. (trespassmag.com)
Though eCommerce often draws the sort of breathless praise of reporters, analysts and commentators that leads to terms like «wave of the... (pymnts.com)
Bannon hasn't given a ton of interviews since President Donald Trump's inauguration, perhaps due to his boss's apparent frustration with breathless coverage of «President Bannon's» influence. (vox.com)