sicko

American

[sik-oh] / ˈsɪk oʊ /

noun

Slang.

plural

sickos

sickie.

sicko British

/ ˈsɪkəʊ /

noun

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

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.

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.

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

After retiring, he didn’t stop feeding into being a basketball sicko — his words — or a full-on basketball psycho — his and his peers’ words.

From Los Angeles Times • Apr. 25, 2025

This is a great episode though for fans of the sicko Tom-Greg dynamic.

From New York Times • May 14, 2023

Then Vonetta said, “I don’t want your stupid kiss, you sicko, runaway thief. Keep running for all I care.”

From "P.S. Be Eleven" by Rita Williams-Garcia

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023