контрагент înseamnă în Engleză

counteragent▼(an agent having the opposite effect; an antidote)
noun

counterpart [counterparts]▼(one which has corresponding functions or characteristics)
noun
[UK: ˈkaʊn.tə.pɑːt] [US: ˈkaʊn.tər.ˌpɑːrt]

counterparty▼(other party to a financial transaction)
noun
[UK: ˈkaʊn.tərˌ.pɑː.ti] [US: ˈkaʊn.tər.ˌpɑːr.ti]