Estonian is a term used for people, language, and things related to Estonia, a country located in Northern Europe. However, if you are looking for alternative words to use instead of Estonian, there are a few options available. One term that can be used is "Eesti," which is the local name for Estonia. Another option is to use the adjective "Estonic," which commonly describes the language and culture of Estonia. Additionally, some may use the term "Esthonian," which is an outdated word that was previously used to describe people from Estonia. Ultimately, the word you choose to use will depend on the context and audience you are speaking or writing to.