Rigout is a British term that means an outfit or clothes. It is a informal word which is used in casual conversations. There are many synonyms for the word rigout that you can try using. Some of these synonyms include outfit, apparel, dress, attire, ensemble, garb, and costume. These words all refer to the clothing that a person is wearing at a specific time. Other synonyms for rigout are clothing, gear, duds, threads, and raiment. Each of these words can be used in place of rigout to describe what a person is wearing. By using these synonyms, you can add some variety to your language and avoid using the same words repetitively.