"Glossator" is a word that means someone who provides explanations or interpretations of difficult or obscure words or passages of text, especially in a scholarly context. Some synonyms for "glossator" include commentator, annotator, interpreter, exegete, and scholiast. A commentator gives an explanation or opinion about something, while an annotator provides notes or comments on a text. An interpreter is similar to a glossator in that both provide meanings and explanations, but an interpreter typically focuses on spoken language. An exegete is a religious scholar who provides critical interpretation of scriptural texts. Finally, a scholiast is a commentator who provides learned notes or explanations about classical texts. All of these words describe someone who clarifies and explains difficult texts.