The Proto-Indo-European word *bʰris-~bʰers-
Word *bʰris-~bʰers-
Meaning fast
Synonyms *ar(e)-ĝ-, *h₁ōk̂-us, *h₂r̥ĝ-rós, *k̂eigh-, *h₂ēhₓtró-, *hₐeĝilos

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