\ ˈsi-(ˌ)kō How to pronounce sicko (audio) \
plural sickos

Definition of sicko

: a person who is mentally or morally sick

Other Words from sicko

sicko adjective

Examples of sicko in a Sentence

She was afraid to walk alone for fear some sicko might be lurking in the shadows. some sicko caught peeking in people's windows at night
Recent Examples on the Web The sicko was previously rumored to have had a fascination with dead cats and had threatened to kidnap, kill and rape girls who shunned him online. Fox News, 31 May 2022 Dating, of course, is a separate animal from long-term relationships—and more prone to ghostings and dud dates and the occasional absolute sicko. Alex Mcelroy, ELLE, 16 Feb. 2022 Two From Spanish sicko Mar Targarona comes this fine addition to the canon of People Stuck To Things cinema, joining the sadistic likes of Saw and Netflix’s own Gerald’s Game. Charles Bramesco, Vulture, 20 Dec. 2021 But now that Logan has had to confront the fact that his son is, in his opinion, a sicko? Jackson Mchenry, Vulture, 8 Dec. 2021 Once Upon a Time in … Hollywood, covers a lot of territory in three acts, all set in the Los Angeles of 1969 just as Charles Manson was working his sicko spell on a group of slavish followers. Time, 22 July 2019 After the Parkland, Florida, shooting, even President Trump was quick to blame the perpetrator’s mental health and the mental health system, using words like nuts, crazy, and sicko to describe him. Jessica A. Gold, M.d., Glamour, 14 Mar. 2018 What a brave little girl who came forward to her parents and put an end to the actions of this sicko. Dave Orrick, Twin Cities, 9 Feb. 2017 Just as know-nothing Paterno should have seen the sicko red flags Jerry Sandusky was waving at Penn State, and Carroll should have been suspicious about Reggie Bush’s living arrangements. David Whitley,, 16 June 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sicko.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sicko

1963, in the meaning defined above

Learn More About sicko

Dictionary Entries Near sicko

sick nurse



See More Nearby Entries 

Statistics for sicko

Cite this Entry

“Sicko.” Dictionary, Merriam-Webster, Accessed 4 Oct. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!