Here's how to think about it:
* Grand: Large, impressive, or magnificent.
* Eloquent: Fluent and persuasive in speaking or writing.
* Grandiloquent: When someone tries to be *too* eloquent, using overly grand language that sounds pretentious and artificial.
Examples:
* "The politician delivered a grandiloquent speech full of empty promises."
* "The novel's prose was so grandiloquent that it was difficult to understand what the author was trying to say."
Synonyms:
* Bombastic
* Pompous
* Pretentious
* Hyperbolic
* Oratorical
Antonyms:
* Simple
* Straightforward
* Concise
* Modest
* Unpretentious