Not stoutly. Perhaps firmly.
I firmly repudiated his remarks about...
but then "gas racket case" doesn't make sens to me. Can you say it another way?
[not a teacher]
Gary, just a comment - you seemed to be making great progress with your English, but lately you seem to be trying too hard to use words you may not be ready for. Maybe you should try to write a little more using the more simple words, and make sure you have a firm foundation for adding the more fancy words a little bit later. GG
Student or Learner