Essential communication skills for the UPSC interview include *articulating thoughts clearly*, demonstrating *active listening*, and engaging in effective dialogue. Candidates should practice framing articulate and coherent responses to complex questions, showcasing their ability to convey ideas logically. Additionally, body language, *confidence*, and the ability to stay composed under pressure are crucial. Being well-versed in *current affairs* and having a clear stance on socio-economic issues enhances candidates' communicative prowess, making them standout contenders in the interview process.