Phil in SF quoted Assassin's Quest by Robin Hobb (The Farseer Trilogy, #3)
King Shrewd is dead at the hands of his son Regal. As is Fitz—or so …
"He is not mine," she said with asperity.
— Assassin's Quest by Robin Hobb (The Farseer Trilogy, #3) (40%)
new vocabulary: asperity
harshness of tone or manner