Artemis- Fluent in Gnommish

“Getting ideas, are we, Captain Short?”
Holly bared her teeth, it was answer enough.
“We are both fully aware of the rules here, Captain. This is my house.
You must abide by my wishes. Your laws, not mine. Obviously my wishes
do not include bodily harm to myself, or your attempting to leave this
house.”
It hit Holly then.
“How do you know my—”
“Your name? Your rank?”Artemis smiled, though there was no joy in
it. “If you wear a name tag . . .”
Holly’s hand unconsciously covered the silver tag on her suit.
“But that’s written in—”
“Gnommish. I know. I happen to be fluent. As is everyone in my
network.”
Holly was silent for a moment, processing this momentous revelation.

- Artemis Fowl, Chapter 6