The phrase "in full sway" is often used to describe a situation where something is fully operational or being executed with great power or influence. There are several synonyms that can be used to convey the same meaning, including "in full force," "in full operation," "at its peak," "fully operational," and "in full swing." Each of these phrases convey the idea that something is happening with great intensity, energy, and momentum, and is fully realized or in effect. Whether it's a business, a political campaign, or a social movement, the phrase "in full sway" and its synonyms describe a time when something is at its most potent and impactful.