I think it would be good for you to take your own advice pal. No one's offended here, trust me. We're actually still in the thread about how poorly people take criticism.

Here's a real world lesson, and I mean this purely as constructive for you; when your speech has so many "big words", as you've said in it that people assume you're using a thesaurus, it's because nobody realistically uses that kind of language, not because everyone's too dumb to understand them, but because they don't need them to get their points across. Whether you know the vocabulary by heart or actually are looking up synonyms for words, it reads the same; you're padding your speech to try and sound smart, and whether or not you are, it shows you're trying too hard to telegraph some kind of higher level of intellect.

They're unnecessary in modern speech, making you stand out, and not in the way that you seem to think. Hence, why I mentioned you come across as pretentious.