When seeking synonyms for "ornateness of style," there are several terms one could consider. For instance, opulence connotes a luxurious, lavish style with a focus on rich details and extravagant decoration. Grandiosity suggests something grand or imposing, often with a sense of elaborate showiness. Baroque and rococo both convey ornate styles with an emphasis on intricate details and ornamentation, while flamboyance implies a bold, striking style with dynamic, eye-catching details. Other possible options might include ostentation, exuberance, or even verbosity, depending on the context and tone of the writing or speech in question.