"Regulate by" is a common phrase used when referring to the act of controlling or managing something. However, there are many synonyms that can be used in place of "regulate by" to add variety to your writing. Examples of synonyms for "regulate by" include: govern, oversee, supervise, direct, control, manage, administer, organize, coordinate, and steer. These synonyms can be used interchangeably when describing the act of regulating something. By using synonyms, you can avoid repetition in your writing and create a more varied and engaging text. It is important to familiarize yourself with these synonyms to expand your vocabulary and increase the impact of your writing.