"open animosity" is a correct and usable phrase in written English.
You can use it to describe a situation in which two individuals or groups are openly hostile or adverserial towards one another, often with their negative feelings made public. For example, "Recent political debates have resulted in a lot of open animosity between the two presidential candidates."
Gradually, in the midst of open animosity, the change that Cattabiani wanted began to take place.
After 10 months of open animosity, making a deal wasn't easy.
Washington Post Editor Marty Baron says the newspaper is approaching the Donald Trump administration as it would any administration, not with open animosity.
Open animosity erupted between the Congressional Leadership Fund, the House super PAC funded heavily by the casino magnate Sheldon Adelson, and the N.R.C.C.
After the first bombing, the police detained the boyfriend of Mr. Dermouche's former wife because there had been open animosity between the men.
In Jersey City's sizable Arab and Muslim communities -- in many instances quite distinct -- the usual tensions are giving way to more open animosity.
The confrontations and overt animosities, the open divisions and the sustained current of violence that reached its peak on Wednesday have produced a new Thailand that is unrecognizable to many who love the nation.
But even as the door to legal immigration is pried open a fraction, animosity toward foreigners seems to be rising.
He said that such open displays of animosity had been rare, though he sensed a certain suspiciousness about him on the street.
"Chávez has become more and more open about his animosity toward the United States," said Antonio Szabó, a former executive at the state oil company here, Petróleos de Venezuela, and now chief executive of Stone Bond Technologies, a Houston software and energy consulting firm.
Microsoft has a long-standing animosity toward open and free software, and Apple's been doing a yoeman's job of discouraging it lately, too.
