The phrase "acrimonious rivalry" is correct and usable in written English.
It can be used to describe a competition or conflict that is marked by bitterness and hostility.
Example: "The acrimonious rivalry between the two tech companies has led to numerous public disputes and legal battles."
Alternatives: "bitter competition" or "hostile rivalry".
The Alinghi owner, Ernesto Bertarelli, who lost the Cup in February, said he would not continue his acrimonious rivalry with Ellison in 2013.
What is clear is that wherever the competition lands in 2013 — whether in San Francisco or some other city — the Alinghi owner, Ernesto Bertarelli, will not be renewing his acrimonious rivalry with Ellison.
A section of the club's supporters was unable to forgive or forget Benitez for his association with Liverpool, and the acrimonious rivalry formed with then Blues boss Jose Mourinho.
It was the result of an acrimonious rivalry with Jose Mourinho and his outwitting of "The Special One" in 2005 and 2007's Champions League semi-finals and the 2006 FA Cup semi-final, plus some barbs many of their supporters remember only too well.
The Derby della Mole – named after Turin's iconic landmark the Mole Antonelliana – is one of the most acrimonious rivalries in Italy.
Both foreign backers and Afghans hope that Ghani and Abdullah can put aside their acrimonious election rivalry and work to improve life in a country that has suffered war and poverty for decades.
ISTANBUL — Turkey and Armenia, whose century of hostilities constitutes one of the world's most enduring and acrimonious international rivalries, have agreed to establish diplomatic relations, the two countries announced Monday.
Hamilton was particularly unpopular with the country's Formula One fans due to his acrimonious inter-team rivalry with Spaniard Alonso during the previous year's championship, which had resulted in the latter leaving the McLaren team and returning to Renault for 2008.
PAGE A18 Sports IN BITTER SOONER-COWBOY RIVALRY, Sooners May Need to Win Big Oklahoma State and Oklahoma are acrimonious rivals, and their 104-year-old series -- known as Bedlam -- divides the state even more than notions of Republican and Democrat.
Not since the days Sebastian Coe and Steve Ovett regularly locked horns on the athletics track has British sport seen a rivalry as intense - or acrimonious - as that of squash pair Nick Matthew and James Willstrop.
His rivalry with Rich, at Covent Garden, was sometimes acrimonious; sometimes it led to new success.
