On the forum, I sometimes hesitate about using a word not in common usage, but I like to use the word with the precise meaning I intend to convey!
I tend to use what first comes to mind and hope to myself that if the word is too unusual, others will look it up, just as I look up words I don't understand. I actually like to learn new words - using a dictionary is one of the many good things I learned from my mother and I should pass your thanks along to her.
I hate to appear a pedant, though!
(just helping you take care of your brain!)