On "On love and women" by Hemingway, there's a sentence which goes,
To marry a handsome figure without character, fine features unbeautified by sentiment or good nature, is the most deplorable of mistakes.
I'd like to know what 'unbeautified' means.
"fine features unbeautified by sentiment or good nature" means good-looking, but lacking good nature.
It means pretty much the same as the first clause - "a handsome figure without character".
The words I've bolded all have the same general meaning. The author is asserting that the latter things (character, sentiment, good nature) have more worth than the former (handsome figure, fine features).