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

Definition of sicko

: a person who is mentally or morally sick

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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 kidnapped and murdered as many as a dozen young women
Recent Examples on the Web 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, "Once Upon a Time ... in Hollywood," 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, "For Women in Health Care, Is Danger Part of the Job?," 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, "Video captured Woodbury bus aide allegedly molesting 6 preschool girls," 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,, "Rick Pitino learns ignorance is not bliss," 16 June 2017

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.

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First Known Use of sicko

1963, in the meaning defined above

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Time Traveler for sicko

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The first known use of sicko was in 1963

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Statistics for sicko

Last Updated

9 Jun 2020

Cite this Entry

“Sicko.” Dictionary, Merriam-Webster, Accessed 4 Jul. 2020.

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How to pronounce sicko (audio)

English Language Learners Definition of sicko

informal : a person who does disturbing things that a person who is mentally normal would not do

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