Dubious

I'm listening to the Outlander series by Diana Gabaldon.  I am on the third book in the series.  I've read and listened to the series several times over the years.  I wonder if I will begin speaking with an English accent or Scottish.  I like the reader as well as the story.
But.
She uses the word "dubious" repeatedly.  It continuously reminds me that I first learned the word from my dad who pronounced it "jubous."