“Fili!” the King barks, not sparing a look in Bilbo's direction, “Kulhînzûrzu?”
“I was here the whole time,” the Prince replies in English, and that, too, is a sign of defiance, Bilbo senses.
“...It's true,” he decides to add, “we were just getting acquainted.”
“And Mister Bilbo was teaching me English things!” Kili chimes in, and Bilbo makes note of the King's face softening slightly before sighing and narrowing his eyes at Fili, whose look snaps away and out of the window stubbornly.