Meanings of increasingly vitriolic in English

I have followed the increasingly vitriolic exchanges between the footsoldiers on Twitter.

It is also clear, however, that the split has become increasingly vitriolic and unpleasant.

Karzai has become increasingly vitriolic against the United States, even accusing Washington of colluding with the Taliban.

But it was also the byproduct of a polarised political culture underpinned by increasingly vitriolic, violent and vituperative rhetoric and symbolism.

However, it would send a powerful message to the White House that congressional Democrats won't retreat in an increasingly vitriolic showdown.

Prime Minister Malcolm Turnbull last week urged supporters and opponents of same-sex marriage to show mutual respect as their campaigns turned increasingly vitriolic.

While a rejection of the legal challenge offers a political solution, an increasingly vitriolic campaign forced Turnbull to urge both sides to show mutual respect.