/ ˈraɪvlri; NAmE / noun
[ C , U ] ( pl. -ries ) rivalry (with sb/sth) (for sth) | rivalry (between A and B) (for sth) a state in which two people, companies, etc. are competing for the same thing :
a fierce rivalry for world supremacy
There is a certain amount of friendly rivalry between the teams.
political rivalries
sibling rivalry (= between brothers and sisters)