Smooth-talking is a term used to describe someone who speaks in a persuasive and convincing manner. The crossword solutions for this term are SUAVE (5 letters), GLIB (4 letters), OILY (4 letters), SLICK (5 letters), and FLUENT (6 letters). SUAVE is an adjective used to describe someone who is sophisticated, debonair, and charming. GLIB is an adjective used to describe someone who speaks in a superficial and insincere way. OILY is an adjective used to describe someone who speaks in a smooth and ingratiating manner. SLICK is an adjective used to describe someone who speaks in a clever and persuasive way. FLUENT is an adjective used to describe someone who speaks with ease and confidence. Together, these words can be used to describe someone who speaks in a persuasive and convincing manner.