loco 1 of 2

adjective

Definition of loconext
slang
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

loco

2 of 2

verb

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
Adjective
Real investors survey the landscape and look for signs of a market gone loco. — Andy Kessler, WSJ, 2 July 2017
Recent Examples of Synonyms for loco
  1. psychotic
  2. bother
  3. mad
  4. unbalance
  5. insane
  6. derange
  7. maniacal
  8. craze
Adjective
  • Those diagnoses included schizophrenia spectrum and other psychotic disorders, borderline personality disorder, post-traumatic stress syndrome, major depressive disorder, and bipolar or related disorders.
    — Ariane Lange, Sacbee.com, 6 July 2026
  • The defense argued that Bland had a psychotic episode due to a COVID infection.
    — Grethel Aguila, Miami Herald, 26 June 2026
Definition of psychotic
Verb
  • The tequila shrimp empanadas disappear quickly, while the huitlacoche quesadilla folds Oaxaca cheese, mushrooms, roasted corn, and salsa macha crema into something deeper and earthier than most Midtown menus bother attempting.
    — Rafael Peña, Miami Herald, 13 July 2026
  • Maybe altering the letters bothered her most because publication inevitably makes the integrity of a letter—the message from writer to recipient—secondary.
    — Literary Hub, Literary Hub, 13 July 2026
Definition of bother
Adjective
  • Over the last few years, there are these sounds that have appeared in certain towns that have driven people mad, that’s actually happening.
    — Reshma Gopaldas, IndieWire, 9 July 2026
  • The scene played out across the soccer-mad nation as Egypt faced the defending World Cup champion in the round-of-16 fixture in Atlanta.
    — ABC News, ABC News, 7 July 2026
Definition of mad
Verb
  • The risk is that only a handful of clubs will be able to cough up those sums, unbalancing the market.
    — Charlotte Harpur, New York Times, 19 May 2026
  • Imagine the wartime use of leaflets that were dropped in large quantities over battlefields, or onto townships, and contained a single message that was intended to mentally unbalance large numbers of citizens or soldiers.
    — Lance Eliot, Forbes.com, 29 Jan. 2026
Definition of unbalance
Adjective
  • England’s 2-1 victory against Mexico — and that insane Azteca Stadium crowd — also was richly deserved.
    — Miami Herald, Miami Herald, 7 July 2026
  • Allowing Trump to declare insane levels of tariffs would have been really bad for the economy and bad for Republicans.
    — Isaac Chotiner, New Yorker, 6 July 2026
Definition of insane
Verb
  • Instagram demanded a certain sort of woman and then produced her, deranging broad swaths of the population in the process.
    — Jia Tolentino, New Yorker, 11 July 2026
  • Only sick, demented, or deranged people in the House or Senate could vote against THE SAVE AMERICA ACT.
    — Dan Gooding, MSNBC Newsweek, 31 Mar. 2026
Definition of derange
Adjective
  • Erling Haaland, Norway’s large, maniacal striker, has several exceedingly Norwegian traits.
    — Zach Helfand, New Yorker, 30 June 2026
  • The president as a maniacal urban planner is a white-knuckle ride, with Washington — and Washingtonians — just holding on for dear life.
    — Maureen Dowd, Mercury News, 23 June 2026
Definition of maniacal
Verb
  • If the lenses are badly crazed, meaning marred by microscopic cracks in the lens surface, or moisture is trapped inside the housing, replacement is the better option.
    — John Paul, The Providence Journal, 3 July 2026
  • The story quickly captivated an American public already more space-crazed than usual, thanks to the recent success of Artemis II.
    — Govert Schilling, Scientific American, 27 June 2026
Definition of craze

Browse Nearby Words

lockups
loco
locoed
See all Nearby Words

Cite this Entry

“Loco.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/loco. Accessed 15 Jul. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words
See More

Popular in Wordplay

See More

14 Phobias You Probably Haven't Heard Of

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List

Ten Words Ending with a Silent ‘T’

The Words of the Week - Jul 10
See More

Popular

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

14 Phobias You Probably Haven't Heard Of

It's a Scorcher! Words for the Summer Heat
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
banana-mirrored
Contradictory Words Quiz Pick out which word means one thing…and the opp...
See All