Sustained, harshly abusive language; invective.
The romantic, melancholy atmosphere among the group by the pond suddenly became still and tense: every one of them could sense the approach of the "storm-centre," and they prepared themselves for an outburst of gratuitous invective.
Since then, mutual enmity, expressed in military confrontations, ACTS of sabotage and a steady stream of invective, has ripened into a broader strategic rivalry.