Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
suspīrĭōsus, a, um, adj. [suspirium], breathing deeply or with difficulty, breathing short, asthmatic: mula, Col. 6, 38, 1: anhelatores et suspiriosi, Plin. 23, 7, 63, § 121; 20, 2, 5, § 9; 32, 8, 29, § 91; Cael. Aur. Acut. 2, 28, 148; Veg. Vet. 1, 11, 1.