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

Synonyms & Similar Words

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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

Parametric modeling, especially when weighted down with decades of AutoCAD’s stupid UI/UX choices, was even harder than programming.

— Lee Hutchinson, ArsTechnica, 23 July 2026
The simplest explanation is that Vance believes his voters are stupid.

— David A. Graham, The Atlantic, 21 July 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

This year’s list includes what may be America’s last remaining players with free 2020 eligibility (silly us, thinking that ended last year) — and even a few who began their careers in the 2010s.

— Stewart Mandel, New York Times, 24 July 2026
Depp engaged the crowd with silly skits for nearly half a hour.

— Angelique Jackson, Variety, 23 July 2026

Definition of silly

Noun

Each chamber in the intimate inn has its own character, and pairs thoughtful amenities with tech-forward convenience.

— Condé Nast, Condé Nast Traveler, 23 July 2026
Mineral-rich soils can add structure and mouthfeel, while climate affects sweetness, body, floral character and astringency.

— Jill Barth, Forbes.com, 22 July 2026

Definition of character

Adjective

Johnson continued this week to push for his foolish and counterproductive desire to impose a $33-per-month tax on each Chicago job generated by the city’s largest private-sector employers.

— The Editorial Board, Chicago Tribune, 10 July 2026
As is, this is a foolish thriller that prompts the occasional snicker but not much more.

— Randy Myers, Mercury News, 9 July 2026

Definition of foolish

Noun

All the weirdo arcane seemingly head-scratching things are just this the honest documentary of us as kids in the late ’90s in Tempe, Arizona, and the surrounding area.

— Brian Hiatt, Rolling Stone, 24 July 2026
The Kmatz-Shaffer combo appeals to me the most, however, as someone who prefers his bullpen stocked with weirdos and freaky arm angles.

— Grant Brisbee, New York Times, 21 July 2026

Definition of weirdo

Adjective

Emiliano Martinez kept a foul-crazy Argentina in it with multiple saves — though many were fairly straightforward — with the 2022 world champions not managing a shot until the 117th minute.

— Anantaajith Raghuraman, New York Times, 20 July 2026
Still crazy enough to do something dumb, but mature enough to curb your impulses.

— Paul Sullivan, Chicago Tribune, 20 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 26 Jul. 2026.

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Synonyms of wacko

adjective

noun

Example Sentences

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