lofty or overly fancy in style
grandiloquent - fancy
The formal word ‘grandiloquent’ is used to describe a way of speaking that is overly ornate and deliberately complicated in order to attract admiration and attention. It implies that the person talking in such a way wishes to make themselves or the subject they are discussing seem important. Typically used to express disapproval.
Simon’s presentation was delivered enthusiastically and was full of grandiloquent language, but there was little substance to it.
The CEO’s speech was flowery and elaborate, but if she really wants to impress people then she needs to back up her grandiloquence with real action.
Although the novel was grandiloquent and swaggering at times, there was enough subtlety and wit to keep me reading to the end.