One of the basic concepts of effective communication is the use of synonyms to avoid repetition of words and phrases. When it comes to the phrase "one controls," there are many synonyms that can be used to convey the same meaning. Some common synonyms for "one controls" include "manages," "regulates," "directs," "supervises," "governs," "administers," "commands," "guides," and "oversees." These words can be used interchangeably to ensure that the message is clear and concise. Using synonyms also adds variety and depth to your writing or speech, making it more engaging and memorable to your audience.