Terminology for wife/spouse attached to you in a real, legally binding sense, as opposed to anime or manga women you see in Japanese cartoons who aren't real and never will be, however you wish they were. This is why you have a waifu-in-real-laifu, because even otaku need to get laid.
Lawful evil is a tendency in RPG alignments that denotes a lawful behavior (ethics) in the chaotic-lawful axis and evil morality in the good-evil axis.
A lawful evil dictator that rules with an iron fist and oppresses its people is an example of lawful evil creature.