Believable is a word that is used to describe something that is likely to be true or credible. Some synonyms for believable include plausible, convincing, credible, trustworthy, acceptable, and reasonable. These words are all used to describe things that are believable or likely to be true. Other synonyms for believable may include credible, authentic, realistic, honest, sincere, and genuine. In general, synonyms for believable are useful whenever you need to describe something that needs to be trusted or believed. They are important for conveying information that is likely to be true, and can be used in a variety of contexts to support your arguments and ideas.