What are some benefits of using big words and latin phrases in arguments?

Question

(Given that the use is appropriate.) Should we distrust those who use them, or is it possible to use them while 'arguing in good faith'?

Answer 1

If you are dealing with ontological or metaphysical matters it is difficult to express oneself adequately in monosyllabic words or simplistic language. It is linguistically economical to use one large word, rather than an assemblage of verbiage which approximates to a single concept.

Answer 2

    I think it's completely irrelevant to the believability of an argument or the credibility of one making it.

    But, it certainly helps one's efforts to have these verbal tools, this vocabulary, in one's repertoire.

     MISUSE is never ever good.  Malapropisms tend to make you look a bit of an ***.

    Language, well used, can only help you.

Answer 3

Are you suggesting we should "distrust those who use them" because people with a large vocabulary are not trustworthy?  Is it better to trust the advice and opinions of smart people or stupid people?

I try to save big words for people who understand big words.  I have no trouble talking at the level of my audience.

If their use is appropriate, they should be used.  Appropriate would mean not only that they express precisely what you mean to say, but they are appropriate for your audience.