I want to know your favorite word, least favorite word, the word you think is most underutilized, and which words you think are over utilized? Mostly for a personal interest.
As a cold read, acting not mentalism for the question.
My favourite word is Idiolect, which is idio- for 'own' and -lect such as dialect.
Basically, an individuals unique use of language and speech.
Which is funny (to me) because it means idiolect is in my idiolect.
As for less meta favourites, I would say I'm quite partial to a few words for various reasons which also happen to be underused from what I can tell: sardonic, imposition, placate, capstone, eclectic, microscopically, impetus, append.
Meanwhile I can't think of a word I would consider my least favourite as I feel most words are contextual for how problematic they can be in that moment.
Basically any connective could be argued as 'over-utilized' but that is the design of most language, if you learn the 100 most common words in a language, you will already understand a large part of normal conversation, after that it's about learning the keywords and nouns that relate to the things you are talking about, if anything that makes language more interesting because it shows what the language values for communication.
If I had to pick overused words I can only think of the ones I keep overusing: particularly, meanwhile, supposed(ly), indeed, technically, anyway, potentially, whenever, basically.
'For the most part' I hedge a lot of my more 'casual' chatting and that results in a lot of neutral/deflective terms being something I overuse, not that I plan to change that in the interim.
And for those who are curious, I have this website on hand from back in my earlier studies of etymology detailing old words across english dictionaries,
https://phrontistery.info/