More formal word for nonsense [closed]

Related to More formal word for the chronic state of being in a snit

Suppose someone is doing extensive speaking -- perhaps presenting to a group, or testifying in a hearing. Suppose her hostile attitude leads her to contradict herself and say a lot of nonsense. Really stupid things that a person with her training and title should know better than to say. How can I express

nonsense

in more formal language?

I tried the thesaurus but the words I found there weren't formal enough (e.g. tripe, claptrap, hogwash, etc.).

Of all the synonyms listed by Wiktionary, the most formal option seems to be absurdity. As a replacement for nonsense, I'd use the plural, absurdities.

That said, nonsense is much more formal than most other options (baloney, bunkum, bullshit, etc.). I've seen it in serious books and scientific articles.

This lady is making inconsistent statements. In your presentation or summary, you can list and counter some of her more egregious inconsistencies.

Inconsistent, Dictionary.com

lacking agreement, as one thing with another or two or more things in relation to each other; at variance........That which is inconsistent involves variance, discrepancy, or even contradiction, especially from the point of view of truth, reason, or logic.

egregious, from Cambridge English Dictionary

(of something bad) extreme; beyond any reasonable degree:

egregious errors of fact

an egregious example of misrepresentation