Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
suspīrātus, ūs, m. [suspiro], a sighing, sigh (poet. and very rare); in plur.: suspiratibus haustis, * Ov. M. 14, 129 (but in Cic. Att. 1, 18, 3, the correct read. is suspiritu).