The phrase "more rinky dink" can be best described by its antonyms, which are sophisticated, modern, and sleek. These words denote something that is polished, finely crafted, and is of high-end quality. They signify a level of elegance and suave that is absent in anything that can be described as "more rinky-dink." When you want to convey a sense of opulence or refinement, you would use the opposite of rinky-dink. The use of words like upscale, high-class, or luxurious would encapsulate what you are seeking to express. Thus, antonyms for "more rinky dink" help communicate the opposite of something chintzy, rustic or low-end.