The phrase "a growing hostility" is correct and usable in written English.
It can be used to describe an increasing level of animosity or antagonism between individuals, groups, or nations.
Example: "The negotiations broke down due to a growing hostility between the two parties, making it impossible to reach an agreement."
Alternatives: "an escalating animosity" or "increasing antagonism".
"There's a growing hostility or tension because things aren't changing," she said.
By now he was sensing a growing hostility towards Muslims in the UK.
This mirrors a growing hostility between the nations – culminating in Trump's infamous call for a wall between the nations – that has been steadily brewing.
But Sanaa Alimia, an academic who researches Afghan refugees, says there has been a growing hostility in recent years – and this normally comes from people at government level.
His remarks seemed to reflect a growing hostility among Afghan officials toward Western diplomatic interference in Afghan policy matters, despite the billions of dollars spent by the international coalition to support the Karzai government.
As von Tunzelmann writes, "By 1946, the subcontinent was a mess, with British civil and military officers desperate to leave, and a growing hostility to their presence among Indians".
Activists for gender and sexuality rights in Poland say they expect a record turnout at an "equality parade" in Warsaw on Saturday, amid a climate of growing hostility towards minorities and claims that the government is curbing human rights.
These trends have been apparent for many years in studies and survey data that show a quiet but growing hostility to immigrants.
Although Coca-Cola already has over half of that market, some see the decision as a sign of growing hostility to foreign investment in China.
Still, community leaders and activists are approaching the weekend with caution amid what they describe as a climate of growing hostility.
Sarkozy was swept from office in May by Socialist François Hollande, and against a backdrop of growing hostility toward budget cuts and tax hikes, Hollande changed the conversation from austerity to growth.
