That's another word Number Three doesn't know. She wonders if Number One, with all his books, would recognize it quickly. She wishes she did, but not enough to actually start picking through his books, of the undoubtedly ample recommendation list that she'd get if she did.

But it's never been her thing.

Not for more than passing through required studies.

Her eyes narrowed, more speculative of his sanity than of the words. Her head tilts in a way that's not entirely normal gesture as she considers his body. "Some kind of full-body tattoo, and maybe surgical-grafting could do it? It's a big favorite with the villains in Asia like you wouldn't believe."

Beat.

"Though none of them are usually your age."

They were addle-brained adults who fell off the edge.