sicko
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
A person with unpleasant tastes, views or habits.
Register: derogatory, slang
Where it’s used:
Used
American English
Examples
But in fact, the murders have been committed by an army of sickos, a phalanx of wild-eyed droolers led by a monster goon with a concrete jaw and a Neanderthal brow.
Quoted attestation: 1986 June 9, David Denby, Movies: Poison, New York, page 130,
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
A mentally ill person.
Register: derogatory, slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “sicko” mean?
A person with unpleasant tastes, views or habits.
Is “sicko” formal or informal?
sicko is generally derogatory, slang.