as in psychotic
unable to think in a clear or sensible way
that dog's straight loco, just running around in circles all day long
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
as in to bother
to cause to go insane or as if insane
years of living alone had clearly locoed the old rancher
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of loco
Ryu Spaeth, New Republic, 28 July 2017
Real investors survey the landscape and look for signs of a market gone loco.
—Andy Kessler, WSJ, 2 July 2017
See All Example Sentences for loco
Adjective
As one of my colleagues said, this was straight loco.
—Ryu Spaeth, New Republic, 28 July 2017
Real investors survey the landscape and look for signs of a market gone loco.
—Andy Kessler, WSJ, 2 July 2017
See All Example Sentences for loco
Recent Examples of Synonyms for loco
Adjective
-
Norman Mailer achieved a similar thing in his non-fiction novel about Gary Gilmore The Executioner’s Song—although, by the time the book was published in 1979, the seedy, psychotic world of Gilmore and his two girlfriends, Nicole and April Baker, hardly came as a revelation.—
Literary Hub,
Literary Hub,
16 Oct. 2025
-
Since its introduction in 2022, only people with schizophrenia and other limited psychotic disorders have had access to the program.—
CalMatters,
Oc Register,
16 Oct. 2025
Verb
-
The clanging of dirty dishes being gathered in the back kitchen does not bother her.—
David Canfield,
HollywoodReporter,
6 Nov. 2025
-
Instagram and TikTok are littered with stories of women and their unsupportive husbands, men who can't remember their own children's birthdays or be bothered to take a weekend off from their golf hobby to spend time with their families.—
Kelly Lawler,
USA Today,
6 Nov. 2025
Adjective
-
As Heather and Whitney hang out in their room, Whitney points out that anytime Lisa’s mad at someone, information on that person subsequently comes out.—
Tom Smyth,
Vulture,
5 Nov. 2025
-
And that is why the idea of him relaunching his coaching career back at the scene of such failures felt mad.—
Steve Madeley,
New York Times,
3 Nov. 2025
Verb
-
The media frenzy about GLP-1 agonists hadn't yet started.—
Mara Gordon,
NPR,
24 Apr. 2025
-
During the media frenzy the then-21-year-old held a press conference, delivering a heartfelt resignation speech.—
Janine Rubenstein,
Peoplemag,
27 July 2024
Adjective
-
The sanity phase of his trial began Thursday to determine whether Nicholson was legally insane at the time of the murders.—
Stepheny Price,
FOXNews.com,
23 Oct. 2025
-
This lockdown is insane & disturbing with what happened during our investigation.—
Ryan Coleman,
Entertainment Weekly,
22 Oct. 2025
Verb
-
Poor Soil Grass may struggle to grow in soil that lacks nutrients, drains poorly, is compacted, or has unbalanced pH. Test your soil to see if nutrient deficiencies are to blame and to check pH levels.—
Karen Brewer Grossman,
Southern Living,
29 Sep. 2025
-
Candida is part of a healthy microbiota but in high abundance, it has been identified as an opportunistic microorganism, causing a reduction in community diversity, and unbalancing the gut microbiota.—
New Atlas,
New Atlas,
21 June 2025
Adjective
-
What's even more disturbing is that the maniacal killer's mask is made of human skin, giving him the nickname Leatherface among horror fans.—
Keith Langston,
PEOPLE,
25 Oct. 2025
-
Huet succeeds in humanizing Daedone, who had an abusive father and a punishing childhood, and whose motivations come to seem understandable, if maniacal.—
Dan Piepenbring,
Harpers Magazine,
24 Oct. 2025
Verb
-
Many of those viewers have strong opinions and allegiances and are deranged.—
Tom Smyth,
Vulture,
5 Nov. 2025
-
Most people don’t commit violent acts, but in the hands of someone who’s fired up and mentally deranged, anything can happen.—
Mike Fleming Jr,
Deadline,
2 Oct. 2025
Cite this Entry
“Loco.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/loco. Accessed 7 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share