The phrase "tost around" means to be tossed or thrown around vigorously. There are many synonyms that can convey this meaning, including jolted, shaken, rattled, tossed, spun, jostled, jerked, and tumbled. Each of these words implies a forceful movement that can be disorienting or uncomfortable. These words can be used in a variety of contexts, such as describing the experience of being in a turbulent airplane or boat ride, or the feeling of being caught in a violent storm. Using a synonym for "tost around" can help to vary language and make writing more engaging.