Blandiloquent, an adjective used to describe someone who speaks in a smooth, soothing or flattering manner, can be replaced with several other words. These include suave, honey-tongued, smooth-talking, persuasive, insinuating, and silver-tongued. Another possible synonym is ingratiating, a term used to describe someone who is deliberately trying to gain the favor or approval of others. A related term is sycophantic, which refers to someone who flatters in order to gain an advantage or position of favor. Overall, there are many words to choose from when it comes to describing someone who speaks in a blandiloquent manner.