war of words
US /wɔːr əv wɜːrdz/
UK /wɔːr əv wɜːrdz/

1.
口水战, 唇枪舌剑
a prolonged and bitter dispute conducted through verbal attacks or written statements
:
•
The politicians engaged in a heated war of words over the new policy.
政客们就新政策展开了激烈的口水战。
•
The debate quickly turned into a war of words between the two opposing sides.
辩论很快演变成双方之间的口水战。