Unspeakable!

Words.
Am i weird, or is it not so unusual? My sister (not the one in China; i have a plethora) points out in a discussion over lunch that in fact there are many words like 'sepulchral'.
In what way, you ask?
Well, put it this way. Have you Ever heard anyone say "...sepulchral..."? Sure, it is used in written language- but spoken?
And no, it does not stem from a fear of mummies, zombies, or other incarnations of death. Frankly, when i see that word, i'm scared of sounding silly even if i pronounce it 'properly'.
Likewise, i was appalled the first time i recognized the pronunciation of 'bona fide'. It staggered out of my English professor's mouth like a gringo on spring break. Forgive me if i pretend not to speak American.