The Proto-Indo-European word *dhwes-
Word *dhwes-
Meaning to breathe
See also Proto-Indo-European: *dhwes- ‘spirit’
Proto-Indo-European: *dhwésmi ‘to breathe, to be full of (wild) spirits’
Synonyms *pneu-, *k̂weshₓ-

Comments
Mallory J.P. and Adams D. (2006)

Other words that might be of interest
*ses- ‘to rest, to sleep, to keep quiet’