The term 'specious appearance' can be defined as a deceptive or false impression. The two crossword solutions for this term are 'VENEER' (6 letters) and 'GLOSS' (5 letters). VENEER is a thin layer of material applied to the surface of an object to give it a more attractive appearance, while GLOSS is a shiny, reflective coating that can be applied to a surface to make it appear smoother and more attractive. Both VENEER and GLOSS can be used to create a false impression of an object, making it appear more attractive than it actually is.