The concept of "brake train of thought" refers to the act of interrupting or halting a flow of ideas. However, if we were to explore its antonyms, we would be looking at words that promote the continuance or smooth flow of thoughts. Some of these words would include "encourage," "motivate," "stimulate," "propel," "inspire," and "ignite." Each of these words denotes a positive action that helps ideas to keep pouring, leading to creativity and productivity. Using these antonyms will not only help get your thought process going but also contribute positively to the outcome of your ideas.