CRACKBRAIN Synonyms: 41 Similar and Opposite Words

crackbrain

noun

ˈkrak-ˌbrān

Definition of crackbrain

as in eccentric

a person of odd or whimsical habits a crackbrain who wore bedroom slippers to the grocery shop

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Recent Examples of Synonyms for crackbrain

Noun

The public reckonings with these figures’ legacies—the troubled former child star gone too soon, the beloved icon, the cult favorite, the complicated eccentric—have come in a cascade.

— Michael Schulman, New Yorker, 5 Sep. 2026
Make sure to practice a full range of motion with these and emphasize the eccentric (the way down) part of the movement for maximal time under tension and muscle-building stimulus.

— Jakob Roze, HEALTH, 19 Aug. 2026

Definition of eccentric

Noun

However, the irregular architecture, surviving wooden beams, and 15th-century chapel lend certain spaces genuine local character.

— Condé Nast, Condé Nast Traveler, 17 Sep. 2026
Those scenes play as if the screenwriters gave up on trying to resolve the twisty plot, instead just making their characters tell all, leaving the film’s denouement much less engrossing than its setup.

— Murtada Elfadl, Variety, 16 Sep. 2026

Definition of character

Noun

My question is, with what AB did to the Raiders, Why would Gruden/Mayock want to take another head case like Jalen Ramsey?

— Jerry McDonald, The Mercury News, 20 Sep. 2019
Whiteside has a reputation of being a bit of a head case, and also, in need of motivation.

— oregonlive.com, oregonlive.com, 1 July 2019

Definition of head case

Noun

Al Marri suggested in her announcement that the new festival will not be in exactly the same vein as the original, which was known for its glitzy red carpets, industry events, and openness to films pushing the social and political envelope.

— Melanie Goodfellow, Deadline, 17 Sep. 2026
In his new role Earley will lead strategic development for Disney Entertainment’s TV franchises, as well as content and production for international originals, production, labor relations and creative talent development.

— Alex Weprin, HollywoodReporter, 17 Sep. 2026

Definition of original

Noun

While Annie seemed like the odd duck out, her closest, idol-holding ally Alex seemed to be considering Sophi as his target, with the goal of taking out his bromance Jake’s other bestie.

— Nick Caruso, TVLine, 2 Oct. 2025
The Incredible Hulk' (2008) Before ultimately being replaced in other movies by Mark Ruffalo, Edward Norton starred as scientist Bruce Banner in this odd duck from the nascent MCU.

— Brian Truitt, USA Today, 25 July 2025

Definition of odd duck

Noun

But these posts primarily look like an effort to establish a liberal-badass persona with standing to take on Trump-supporting gun nuts.

— Ian Parker, New Yorker, 14 Sep. 2026
Sparkables are made in a facility designed to avoid nine major allergens, including eggs, milk, peanuts, wheat, tree nuts and sesame, the Girl Scouts said.

— Dee-Ann Durbin, Los Angeles Times, 10 Sep. 2026

Definition of nut

Noun

The engine features a flat-plane crank that Mercedes-Benz AMG said reduces rotating mass and improves revving characteristics.

— Joel Feder, The Drive, 10 Sep. 2026
In the ever more precarious world of academia, the neck of the principled luddite crank might be particularly attractive when institutions swing the axe in the next round of layoffs.

— Dónal Gill, The Dial, 8 Sep. 2026

Definition of crank

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.

Browse Nearby Words

crack

crackbrain

crackbrained

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“Crackbrain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/crackbrain. Accessed 20 Sep. 2026.

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Synonyms of crackbrain

noun

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