TOPIC' The term 'SUBJECT TO BE DISCUSSED' can be answered with the 8-letter word 'TOPIC'. A TOPIC is a subject or issue that is discussed or debated. It can refer to a specific area of interest, such as a particular field of study, or it can refer to a broader concept, such as a political issue or a philosophical debate. Topics can also be used to describe the focus of a conversation or discussion, such as a meeting agenda or a classroom lecture.