In social media, it means “alternate account”, which is basically a 2nd (or 3rd, 4th, 5th, etc.) account that you have. Usually an alt is used less than your main account.
I’m bored, maybe I should go on my alt.

My main account got hacked, thank the lord that my alt isn’t
by nlolhere July 16, 2020
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1. In music, short for Alternative.

2. In RPG, short for Alternate ID.

3. In MPD, short for alter or persona.

4. In keyboarding, the Alt key, located just to the left of the space bar.

5. In HTML, the alternative text attribute of the img tag.
1. I don't care for Alt Music.

2. My Alt is Downstrike.

3. I tried to list my alts once, but I lost count at 44.

4. The reason you don't see Alt is it's hidden under your left hand.

5. There's no such thing as an "alt tag". Alt is an attribute of the img tag.
by Downstrike January 29, 2006
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In MMPORGS like MUDs, a reference to a player's supplementary--thus "alternative"--avatar/character. Not the player's primary character but one used for blowing off steam, avoiding a primary character's responsibilities, or exacting anonymous revenge on a player-character you dislike.
I logged on with my alt after PKing him cuz I didn't want him to gank me.
by Werttrew July 3, 2004
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An abreviation for the word "Alternative" meaning the type of music.
Kait's favorite music is alt-rock.
by Bey April 21, 2003
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"alt" is different from alternative, "alt" are the wannabes who CLAIM to be alternative but don't listen to the music, they are those annoying ass drainers who listen to hyperpop or whatever, they say hello kitty says acab and hate on people who are ACTUALLY alternative. They tell us that were "gatekeeping" when were rlly just letting them know that they cant label themselves as alt because they listened to a bladee song. hyperpop isnt THAT bad its just not alternative, at all. annoying asl
drainer "alt" kid: look at that person over there why r they listening to metal and why do they look like that AJSJSJSJSJ PLSS (insert crying emoji and hand emoji), thats not REAL alt (insert cat emojis)
their "alt" drainer friend: FRLL AJAJJAJJSHSHHSDHAUIEHDAUWHSUDIGUIQGWIUWGUIGDWIUWDIUWDGIW PLSSSS YQUIEGDUIGQUGDDWUIW THEY LOOK SO SCARY LIKE ANYWAYS.... HELLO KITTY SAYS ACAB!
by sauagse fingers March 11, 2021
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A term used by Gen Z (🥶😈 🔥🥳 😎) to depict the "other Gen Z" (🏳️ 🌈💅🏻✊🏾✨🤬) or aka "Alt". (Short for alternative)

Alt (typically females) is a personality that is recently becoming more apparent on websites such as Twitter, Tumblr, and TikTok. (TTT).

Alts typically exhibit behaviours such as:

- cancelling ❌
- social media activist ☮️
- dyes their hair or wears lipstick 🟢🟣🔴🔵
- "GIVE THEIR LAND BACK" 🏔
- has short hair (typically female/white) 👩🏻 🦲
- puts this ✨emoji✨ in every word
- extremely political ✊🏾
- plays instruments 🎺
- "HEY! You're not a POC! STOP."
- anti colonialism
- hangs these flags up 🏳️ ⚧️🏳️ 🌈
- pronouns in bio 🙍
- "EAT THE RICH" 🤬
- despises the popular kids 👯 ♀️
- furries 🐶
- "BARK", "HISS", "ROAR" 🦖
Gen Z: "You're weird..."

Alt: "THIS IS EXTREMELY OFFENSIVE TO ME! DID YOU KNOW THAT I HAVE FEELINGS TOO? I AM GOING TO CALL YOU OUT ON TWITTER AND GET MY FOLLOWERS TO CANCEL YOU! ALSO YOU CANNOT SAY THE WORD WEIRD BECAUSE YOU ARE UNDERMINING THE STRUGGLES OF THE MENTALLY ILL! USE WORDS LIKE 'UNIQUE'! CULTURAL APPROPRIATION! 1312!"
by GretaThunbergIStheFUTURE November 30, 2020
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For example, Did you hear that emily the gringa is alt now?
by That xD rawr bitch February 3, 2021
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