The phrase 'one horse town' is a commonly used idiom that refers to small, unremarkable places with little to no activity or excitement. While it's a colorful term, there are many other phrases that can be used to convey the same meaning. Some synonyms for 'one horse town' include backwater, sleepy town, outback, boondock, rural backwater, small town, and village. Each of these phrases implies a lack of excitement or stimulation, and is often used to describe places that are remote, isolated, or outdated. Regardless of the term used, these words paint a picture of a simple, uneventful town where not much happens.