WACKO Synonyms: 176 Similar and Opposite Words

wacko 1 of 2

adjective

ˈwa-(ˌ)kō

variants also whacko

Definition of wacko

as in absurd

showing or marked by a lack of good sense or judgment a completely wacko obsession with cleaning

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Antonyms & Near Antonyms

wacko

2 of 2

noun

variants also whacko

as in eccentric

a person of odd or whimsical habits Some think he is a wacko but I consider him a genius.

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 wacko

Adjective

This wacko crew was one of the greatest things in the history of television. — Jordan Hoffman, EW.com, 14 Aug. 2025 Sounds crazy, but when has UAB football not been completely wacko. — Joseph Goodman | [email protected], al, 16 Dec. 2022

Noun

Out of nowhere, there’s a wacko outdoor puppet theater production by a troupe that operates like a New Age cult. — Charles McNulty, Los Angeles Times, 25 June 2024 This is a wacko package to be sure, and overlong at two-and-three-quarter hours, so mileage will vary even for devoted Lanthimos fans. — David Rooney, The Hollywood Reporter, 17 May 2024 See All Example Sentences for wacko

Recent Examples of Synonyms for wacko

Adjective

And no, that was NOT OutKick or FOX who wrote that stupid headline.

— Zach Dean OutKick, FOXNews.com, 3 July 2026
The thing about House of the Dragon is that everything really is quite stupid.

— Nicholas Quah, Vulture, 29 June 2026

Definition of stupid

Noun

With its loose ends and digressions, Dream Me a Dream stays true to those idiosyncratic instincts while retaining enough of the welcoming glow of Dance of Love to make this an affecting farewell from an endearing eccentric.

— Stephen Thomas Erlewine, Pitchfork, 22 June 2026
The eccentric cuz is quick to try and help Bobby solve problems, which often gets him into trouble, but ultimately pushes him out of his shell.

— Skyler Trepel, Entertainment Weekly, 20 June 2026

Definition of eccentric

Adjective

Sevigny holds firm to Tatum’s hard-to-love jerkishness, which helps smooth over the serious arguments that can turn inadvertently silly (and amplifies the purely silly ones).

— Ben Travers, IndieWire, 9 July 2026
The post also included a sweet selfie with her two younger sons, with Mateo smiling widely and Ciro making a silly face for the camera.

— Charna Flam, PEOPLE, 8 July 2026

Definition of silly

Noun

Each will showcase original works from more than 30 artists reimagining iconic moments, characters and worlds from Sonic’s history, alongside artwork from SEGA’s archives.

— Matt Minton, Variety, 8 July 2026
Thorpe’s characters are so specific, their balance of prickliness and kindness and quirk so delicate, that one wrong casting choice could ruin the whole viewing experience.

— Judy Berman, Time, 8 July 2026

Definition of character

Adjective

Comparing Young’s new deal to any extension for Davis would be a foolish exercise.

— Josh Robbins, New York Times, 30 June 2026
Further, Plato’s disdain for Gorgias, Antisthenes’ first teacher, and sophistry in general is clear; in the Platonic dialogue Gorgias, the titular character is made out to be rather foolish.

— Theodore McDarrah, Forbes.com, 26 June 2026

Definition of foolish

Noun

Richard Dreyfuss stars as an Indiana electric lineman/dad who gets discombobulated after a light from a passing UFO compels him to do weirdo things — like build a mountain replica inside of his home.

— Randy Myers, Mercury News, 8 June 2026
Himes’ novels, like Riley’s films, also run on a bench of eccentric weirdos.

— Brittany Allen, Literary Hub, 2 June 2026

Definition of weirdo

Adjective

That crazy gorgeous Bad Man Blue, and something Harley has called Inferno Gray with Wet Slide Graphics.

— New Atlas, New Atlas, 6 July 2026
But in addition to these crazy moments and plots, what the World Cup does every four years is put a bright spotlight on the best soccer players in the world.

— Julyssa Lopez, Rolling Stone, 6 July 2026

Definition of crazy

Noun

Artists have always used music to question authority and expose the cracks (and the crackpots) in the American story.

— Time, Time, 6 May 2026
In one corner, the heartless girlboss; in the other, the crackpot conspiracy theorist (who just happens to be more sympathetic and charismatic than such types usually are).

— Nate Jones, Vulture, 31 Jan. 2026

Definition of crackpot

Browse Nearby Words

wackiness

wacko

wackos

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Style

“Wacko.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/wacko. Accessed 11 Jul. 2026.

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Synonyms of wacko

adjective

noun

Example Sentences

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