The Proto-Indo-European word *yeudh-
Word *yeudh-
Meaning fight, moved, stirred up
See also Proto-Indo-European: *yeudhmós ‘fighter’
Avestan: yūiẟiia- ‘fight’
Synonyms *er-, ere-, erei-, *katu-, *weik-, *nant-

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

Other words that might be of interest
*k̂at- ‘battle’