Phil in SF quoted Royal Assassin by Robin Hobb (The Farseer Trilogy, #2)
Young Fitz, the illegitimate son of the noble Prince Chivalry, is ignored by all royalty …
That which Verity had sought to keep quiet would be on everyone's lips tomorrow, with the added fillip that it had been the Queen herself they'd dared to attack.
— Royal Assassin by Robin Hobb (The Farseer Trilogy, #2) (20%)
new vocabulary: fillip
something which acts as a stimulus or boost to an activity
i was today year's old when I learned my name has a homophone.