choke off

verb

1. To get rid of; to cause to come to an end.
2. To stop (someone or something) in the execution of a purpose or task; to stop (someone) from doing something.

   “to choke off a speaker by uproar”

   “"It was a discreditable business. There were one or two folk who were inclined to take him seriously, but he soon choked them off." "How?" "Well, by his insufferable rudeness and impossible behavior."”

3. To choke up; to choke on words.
4. To cause (someone) to lose interest or drift off from a conversation.