’The Lord gave us good farmers two strong hands so that we could take as much as we could grab with both of them,’ he preached with ardor on the courthouse steps or in front of the A&P as he waited for the bad-tempered gum-chewing young cashier he was after to step outside and give him a nasty look.
The news killed his mother, who just lost her will to live and wasted away and died, which was just fine with his father, who had decided to marry the bad-tempered girl at the A&P if he had to and who had not been optimistic about his chances of getting his wife off the land without paying her some money or flogging her.
There are no more uses of "tempered" in the book.
Show samples from other sources
If you had only given me some hint, if you had only broken your word with me a couple of times, if you had been bad-tempered or impatient with me—if you had been a lesser man, maybe I could have taken what I saw you doing.
Harper Lee -- Go Set a Watchman
For the rest of the day, I’m short-tempered and distracted.