swoon

Etymology 1

From Middle English swoune, swone, from the verb (see below).

noun

1. A faint.
   As he drew near the throne, a rushing whirlwind arose in the corner of the hall and, lo! from the roof beams floated down a monstrous black serpent that coiled itself up on the very seat of majesty. The Emperor fell in a swoon. 14th century CE, Guanzhong, L., “1. Three Heroes Swear Brotherhood In The Peach Garden; One Victory Shatters The Rebels In Battlegrounds.”, in Brewitt-Taylor, C. H., transl., Romance of the Three Kingdom, published 1925, archived from the original on 2022-01-25
2. An infatuation.

Etymology 2

From Middle English swounen, swonen (“to faint”), and aswoune (“in a swoon”), both ultimately from Old English ġeswōgen (“insensible, senseless, dead”), past participle of swōgan (“to make a sound, overrun, suffocate”) (compare Old English āswōgan (“to cover over, overcome”)), from Proto-West Germanic *swōgan, from Proto-Germanic *swōganą (“to make a noise”), from Proto-Indo-European *(s)weh₂gʰ-. Cognate with Low German swogen (“to sigh, groan”), Dutch zwoegen (“to groan, breathe heavily”), dialectal Norwegian søgja (“to whistle, hum, talk loudly”). More at sough.

verb

1. (literally) To faint, to lose consciousness.
   I threw myself down on the island ground, like a dead man, and drowned in desolation swooned away, nor did I return to my senses till next morning, when the sun rose and revived me. 1885, Richard F. Burton, The Book of the Thousand Nights and a Night, Night 539
   He's got more than just mad skill / He's got a beaver tail and a bill. / And the women swoon whenever they hear him say… Aug 2 2011, “Perry the Platypus”, in Phineas and Ferb: Across the 1st and 2nd Dimensions, performed by Randy Crenshaw, Walt Disney Records
2. (by extension) To be overwhelmed by emotion, especially infatuation.
3. To make a moan, sigh, or some other sound expressing infatuation or affection.
   The girls swooned at the picture of their favorite actor.
   2013 (November 2) Pinky 10 minutes into episode 25 ("The Spy Who Slimed Me") of TV series "Pac-Man and the Ghostly Adventures" per closed captions [Swoons] For sure. He's totally dreamy. Uh--but my heart still belongs to you, Pac-ums.