A fake or stolen online identity created or used for the purposes of beginning a deceptive relationship.
Turns out the girl I thought I met online was just a catfish of a fat old man.
by SilverishGoldNova December 04, 2017
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Catfish is someone who makes a fake account of someone on social media (Instagram, Facebook, tinder) to lure into a relationship with a false identity.
Paul: Yo Ashley! I know youre catfish. Im just playing around with you.
Ashley: Okay! Dont tell anyone! Not even Aman!
by MYNAMEISDONTWORRY May 10, 2017
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you think you're talking to a fit bird and your actually talking to a 40-year-old obese plumber called Steve from Dorset who is wanking into a half-full bag of wotsits.
you: hey m, asl?
steve: hey baby, f here who is dtf
you: is this a catfish or am I in a dream!
by platypus mafia July 03, 2018
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A catfish is someone who pretends to be someone they're not using Facebook or other social media to create false identities, particularly to pursue deceptive online romances.
Did you hear how Dave got totally catfished last month?! The fox he thought he was talking to turned out to be a pervy guy from San Diego!

or

I was really falling for that gorgeous gal on Facebook, but she turned out to be a catfish.
by sbacker July 22, 2010
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Someone who pretends to be someone they're not online to create false identities, particularly to pursue deceptive online romances.
Freshman year I started chatting with this chill girl online, only for her to turn out ugly-ass catfish. Never again.
by Midoof September 28, 2010
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someone who pretends to be someone they are not online to create false identities, particularly to pursue deceptive online romances.

From the 2010 movie Catfish
Many guys have multiple accounts on facebook because they are catfishes
by Dexxe September 02, 2010
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After I ate a whole catfish with the head on before the Nascar race, I stabbed Mark, Dak and Kelly with my catfish bones.
by hippity hoo October 03, 2007
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