Useful english dictionary. 2012.
yswowe — part. == in a swoon. Alys. 2262. See swoon … Oldest English Words
swoon — sb. RG. 13. AS. a swunan v. n. [swoghen]. Alys. 5857; part. ‘yswowe.’ RG. 290. Alys. 2262; ‘yswawe.’ Alys. 2379 … Oldest English Words