I'm Looking For A Word Like Deepity But To Describe Writing That Misses Its Intent

A few months ago, I read a review of some political writer's book on either the Washington Post, The Atlantic, The New York Times or somewhere like that, that described the author's attempt to seem profound but failing in one word. I hadn't seen the word before or if I had it didn't occur to me. I searched for its meaning and if I recall correctly it was akin to "deepity" in that the author was trying to be profound but wasn't. It didn't relate to one sentence or statement like a deepity does, though. It was more about the content of the book itself and especially its ending. Another way I remember it is that, the author was deliberately trying to frame the ending in a profound or philosophically-reflective manner and failed to execute it, basically falling flat.

I've deleted my browser history since then. It was an adjective. I remember seeing it and thinking they meant a different word because I had to look it up. I want to say it started with a "b" or a "p" but I could be wrong.

grandiloquent (from dictionary.cambridge.org, 2019):

A grandiloquent style or way of using language is complicated in order to attract admiration and attention, especially in order to make someone or something seem important

The term grandiloquent specifically refers to the usage of bombastic language as opposed to ostentatious behavior which is more of a general lifestyle of showiness (e.g. throwing around money).

For example:

The author used grandiloquent language to gain a sense of authority but it showed he had no deep understanding of the societal issues that are on the agenda of politicians.