"express antipathy" is a perfectly fine and usable phrase in written English.
You can use it when referring to a strong feeling of hostility or dislike towards someone or something, for example: The crowd expressed their antipathy towards the mayor by booing loudly.
The voices of strongly ideological conservatives had been heard for decades, expressing antipathy toward modern times in general and to what were seen as the "encroachments" of the welfare state.
Ecuador, like Cuba and Venezuela, has expressed antipathy toward what it considers arrogant American policies in Latin America and demonstrated with its decision to shelter Mr. Assange that it was willing to defy Washington.
She added, "The meaning of 'Barbie' went beyond an expressed antipathy; actual physical violence and torture towards the doll was repeatedly reported, quite gleefully, across age, school and gender".
Trump expressed antipathy toward confronting Putin about the 2016 attack on the United States' election.
Each time he came to my house, he expressed antipathy.
But it's become a way for him to express his antipathy toward France.
But to express that antipathy in 1987, as tensions were winding down, was impolitic.
"It is clear that Ahmadinejad's policies over the last five years have threatened the merchants, and many of them are willing to express their antipathy towards him now".
"If the message is 'We're not the Tories or the Lib Dems, and you hate them', that may work up to a point, but it won't do much for those people who would happily express their antipathy by voting for Ukip or just staying at home, let alone those who hate Labour as well.
In fact, for the first time, Mumbai citizens were expressing an antipathy towards that phrase.
