Malfoy is derived from the French “mal foi,” meaning “badly (or in this case, bad) faith” or “unfaithful”. In law, “bad faith” refers to a case in which a malicious motive on the part of a party in a lawsuit undermines their case. In existentialism, “bad faith” is a philosophical concept in which people blame their own failures on external factors, thus denying responsibility their actions. Also, this most likely refers to the Malfoys’ tendency to switch their loyalties to avoid danger, rather than steadfastly supporting their presented views. x