The Collaborative International Dictionary
Preknowledge
Preknowledge \Pre*knowl"edge\, n. Prior knowledge.
Wiktionary
preknowledge
n. prior knowledge
Usage examples of "preknowledge".
My interpretation is that under Atrian law, murder need not be premeditated, but is defined simply and explicitly as the taking of one or more Atrian lives, by any means whatsoever, with or without motive or preknowledge.