The phrase "a growing animosity" is correct and usable in written English.
It can be used to describe an increasing feeling of hostility or resentment between individuals or groups.
Example: "Over the years, there has been a growing animosity between the two rival factions, leading to escalating tensions."
Alternatives: "increasing hostility" or "rising resentment."
While we were in Berlin, we noticed a growing animosity toward the so-called "EasyJet set" — tourists taking advantage of cheap international flights to join in Berlin's party scene.
A growing animosity between Ferguson and Benitez, formerly on friendly terms, came to a head in January 2009 when the then Liverpool manager famously claimed the Scot received preferential treatment from the football authorities.
Helen Grady joins Muslim travellers on their journey to Cordoba – a focus of their Islamic faith on the European mainland despite a growing animosity towards them and banning of Muslim prayers at the site.
Despite this success, the following years witnessed a growing animosity between Drusus and Sejanus.
The criticism demonstrated an apparent growing animosity among officials in Glendale and other cities over the state agency's efforts to clear the air in Los Angeles.
To date, she is not aware of any resource that enables people to overcome the growing animosity that results from a difference between partners on their vision of dealing with trash in one's home.
The alternative -- no trial at all, as some are advocating -- risks keeping innocent people locked up in prison indefinitely, ensuring growing animosity toward the United States, a loss of cooperation from our allies, and ultimately presenting a grave danger to our national security.
The once proud times with opposite roles were not forgotten, explaining growing animosity and anger looking for an explanation; and even more important, how to reestablish a more equal relationship.
The records indicated that he did indeed have a criminal record and had a restraining order against him, in order to protect a woman whom he had violently assaulted". Ultimately, Madison became tired of the growing animosity in his now divided kingdom.
Against the backdrop of a lingering financial crisis, rising inequality between northern and southern EU member states, and growing animosity between east and west over the handling of the refugee crisis, to many voters these elections will be another opportunity to kick the Establishment and send an even larger number of Eurosceptics, nationalists, and populists into the heart of the EU.
And the growing animosity between the two men doesn't bode well for improving the situation.
