Remember when the word 'epic' brought to mind Homer and The Iliad and The Odyssey?
It's funny how common words come and go over the years. Usually it's so slow that you don't realize it, but I remember 'epic' being most commonly used to refer to a long narrative poem as recently as in my college days.
It's still referring to that in the first & second definition in the dictionary.
But now? Now 'epic' has moved on to the 3rd & 4th definitions. Anything huge, major, crazy big or awesome. And these days, thing are getting bigger and better-- more epic-- each and every day.
Of course, some of that is regional & generational, I'm sure.
What other words have changed the most commonly thought of definition over the years?