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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
by Chenoan March 25, 2011
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A Waifu is the word for an anime character , which is your "Wife". It also can be engrish , meaning pronounce Wife in japanese. The importenst thing in having a Waifu is to never have more than one. If you do so , your laifu is ruined.
I'm in love with my Waifu
My Waifu can't eat , she is 2D
by WaifuStealer January 14, 2015
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A "Waifu" is a Japanese term drawn from "ๅซ" or "yome" (romanized) meaning "Wife". Many non-Otakus mistake a Waifu for a best girl, however a best girl is a female character you enjoy to watch, however the term "Waifu" has a much more intimate meaning (sometimes being sexual). There are in-fact 2 different types of waifus, or more accurately the otaku themselves, is whether the otaku "Protecc" or "Attacc," the former being someone who protects their waifu from others who wish to lewd them, and their own waifu from their own lewd thoughts for fear of disrespecting their significant other, and the latter being someone who is in a much more sexual relationship, and is willing to lewd or even beat their meat to. Many otakus also own body pillows or posters with their waifu on it.

It is also forbidden to have more than one waifu, otherwise others of their own kind will try to force you to break up with one.
john: Yo Jim, do you have a waifu?
Jim: No you dumbass weeb.
by epicmemester69_420 June 28, 2019
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From the Japanese word ใƒฏใ‚คใƒ•, a transcription of the word 'wife'. Your personal most attractive female anime/cartoon character. Commonly used by a weeaboo, but also used by people with common sense sometimes.
Male Equivalent: husbando.
Hey, you should check out the Scott Pilgrim comics. Kim Pine is totally my waifu.
by pixikid September 18, 2016
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A word weebs use to describe their non-existant girlfriends.
Person 1: A waifu is kinda like my real girlfriend, non-existant.
Weeb: How dare you offend my girlfriend, she is totally real and she gives me pleasure every night.
Person 1: Yep, you belong in the fucking trash.
by a squatting slav September 20, 2018
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an abbreviation for "Why Am I Forever Unloved" (at least, in the 3D world)
Weebs turn to waifus to escape reality and find the perfect love of their dreams in the 2D world. They are both the consolation for the loneliness and the reason for the loneliness
"I love my waifu and I will never leave her!" -Any given weeaboo or otaku
via giphy
by faster than time June 17, 2018
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The biggest spice in the whole world, no exceptions. Is really cute and huge asbestos. This is a fact.
by PancakePapa September 25, 2018
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