Elucidate and expound are great synonyms for the word elucubrates. Elucidate means to explain or make something clear. It is often used when providing detailed explanations of complex concepts. Expound means to explain in great detail. This term implies that the person doing the explaining has a deep understanding of the concept being discussed. Other synonyms for elucubrates may include clarify, illuminate, elucidate, illustrate, or interpret. These terms can be used interchangeably depending on the context, but they all convey the same idea of providing a clear and detailed understanding of a topic.