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sicko

American  
[sik-oh] / ˈsɪk oʊ /

noun

Slang.
sickos plural
  1. sickie.


sicko British  
/ ˈsɪkəʊ /

noun

  1. a person who is mentally disturbed or perverted

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. perverted or in bad taste

    sicko prurience

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does sicko mean? Sicko is a slang word for someone considered deranged, sadistic, perverted, disturbed, or the like.

Other Word Forms

Noun Inflected Forms

Etymology

Origin of sicko

sick 1 + -o

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

It’s worth watching the whole thing, if you’re exactly the right kind of sicko.

From Salon Apr. 26, 2026

Cycling through head coaches like Hollywood assistants who can’t perfect a Starbucks order is another symptom of college football’s sicko economy.

From The Wall Street Journal Nov. 4, 2025

It’s my comfort book, which probably means I’m a sicko, but I don’t care!

From New York Times May 13, 2023

Matt: I’m a real sicko for the tense department meetings and jockeying lackeys we see in “Andor,” the glimpses of the massive imperial bureaucracy.

From Los Angeles Times Nov. 30, 2022

“He’s been sicko all his life,” Mary Anne explained to Ben.

From "The Great Santini" by Pat Conroy

Fashion weeks are like summer camps for style sickos.

From Los Angeles Times Nov. 19, 2024

The design is jarring at first, but it could be the tall order that content creators and productivity sickos have been waiting for.

From The Verge Jun. 16, 2022

Is there a particular reason the sickos are drawn that way?

From Slate Dec. 16, 2020

We've all watched Man on Wire and a bunch of sickos watched that dude walk on a tight wire over the Grand Canyon.

From Golf Digest Apr. 17, 2018

When decent men read an article like this one they will be shocked at this horrible behavior and think it's just a fringe group of sickos doing this stuff.

From New York Times Sep. 2, 2016

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