wcwのようなどんな単語でも探してください。
 
1.
A term coined by Otaku and Weeaboo alike for their 2D significant others; predominantly anime and video game characters. A Waifu, in contrast to a harem, is the love between one man and his one and only Waifu. You treat your Waifu with the utmost respect and courtesy and most refuse to even fap to their beloved, seeing the act as an insult to the non-existent woman they have committed themselves to.

A spin-off term "Husbando" followed for Fujioshi who feel similarly towards male characters.
Not even a missing dimension will keep you from your glorious waifu - The Melbourne MX Newspaper
Chenoanによって 2011年03月25日(金)
 
2.
Weeaboo for "wife". Don't say this word ever, please.
Mai waifu ^___^

^ Faggotry.
Connor Kelleyによって 2008年06月17日(火)
 
3.
Japanese for "wife". Outside of Japan, it is seldom used by anyone but weeaboos to display their unhealthy attraction for fictional anime characters. See: faggot.
SAKURA IS MY WAIFU ^__^ ***OMG SO KAWAII DESU**^^*:3***
Siriusdによって 2010年07月08日(木)
 
4.
a waifu is a mexican living in england who likes animated films and abhors all things cute (puppies, kittens, etc)
That waifu was bitchy all day long.
SomeGirlFromKansasによって 2013年07月11日(木)