Is there a word that can be used to describe the act of speaking over another person? Looking particularly to describe the act in the context of a debate where a speaker is unable to respond due to repeated interjections.
Shouting down? (If at a noisy public meeting) Drowning out? Smothering in interruptions? Norwegian has an expression, literally "to talk in someone's mouth". That fits so perfectly that it's a pity English doesn't have it – unless you want to start a fashion.
- shouting to interrupt a speech with which you disagree
Surely Mitch (see answers) is right:
speaking over others
is quite appropriate:
Communication for Business and the Professions: Strategie ... Page 96 Judith Dwyer - 2012 - Preview
This attention can be demanded by speaking loudly, speaking over others, using attention-seeking body movements, and ignoring feedback and the views of others.