The term "waifu" is a word that is used prevalently in the Manga/Cartoon, and Video-game fandoms. The origin of the word comes from the katakana word for wife; ワイフ

However, Japanese-speakers will never use that word. The real word for wife is 妻 (tsuma/sai).

"Waifu" is used to refer to a fictional girl or woman (usually in Anime, Manga, or video-games) that you have sexual attraction to, and you would even marry.

Remember; "ワイフ waifu" and "妻 tsuma" are completely different. Waifu is a joke word that Anime fans call fictional female characters that they love and would marry if they were real. Your tsuma is your real wife. That is the real Japanese word for wife.
Example of waifu:

"Do you like Camilla from Fire Emblem Fates?"
"I LOVE Camilla! Her large breasts, her curves,... she's my waifu!" 😍
(This guy has sexual attaraction towards Camilla from Fire Emblem Fates. He would even marry her if she was real, he called her his "waifu"

Example of 妻 :

私は今日結婚しました これは私の妻キコです
「I got married today. This is my wife Kiko.」
(A man was married to Kiko that day. She is real, not a fictional character. The real Japanese word for wife was used.
by Phazer XP August 24, 2019
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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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From the Japanese word ワイフ, 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 February 12, 2016
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To make someone or something your "Waifu".

This can be a term used to describe someone making a certain anime girl into their Waifu.

OR
It could mean someone marrying their Quote on Quote "Waifu".
I waifued 'insert name here' yesterday, since they are my f a v o r i t e anime girl :3
by MiraTheWaifu November 11, 2018
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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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