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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for crackbrain

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

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

Noun

Damon is rugged and haunting in this absolute star turn as Odysseus, who, in a departure from the wilier original, is written as a true-hearted hero whose primary flaw was his unwavering loyalty to his men and his family.

— Hannah Abraham, Forbes.com, 18 July 2026
The Citrus Heights location is larger than the original in North Highlands, Stupin said.

— Emma Hall, Sacbee.com, 17 July 2026

Definition of original

Noun

The new research found that children in nearly every region of the world are not eating enough fruits, non-starchy vegetables, legumes, nuts and seeds, and starchy vegetables.

— Katia Hetter, CNN Money, 22 July 2026
Anti-inflammatory foods tend to be plant-based, including fruits, vegetables, whole grains, beans, lentils, nuts, and seeds.

— Maggie O'Neill, Verywell Health, 21 July 2026

Definition of nut

Noun

The whole debacle left me shaking my head like a Waldorf and Statler-style old-timey crank, openly nostalgic for a time in which music took up more space, demanded more of us, and didn’t have to be so uplifting.

— Amanda Petrusich, New Yorker, 20 July 2026
The firefighters ultimately used a hand crank to move the elevator, and Wallace told the outlet that the museum gave the everyone lifetime free passes in return.

— Liza Esquibias, USA Today, 10 July 2026

Definition of crank

Noun

Malley is a normal, athletic outfielder, not some sort of weirdo contortionist reliever.

— Grant Brisbee, New York Times, 13 July 2026
By the early 1990s, Eugene had earned itself a reputation as a beacon of progressive-minded irreverence, drawing a pungent mix of weirdos, iconoclasts, and freethinkers.

— Literary Hub, Literary Hub, 10 July 2026

Definition of weirdo

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

See all Nearby Words

Cite this Entry

Style

“Crackbrain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/crackbrain. Accessed 24 Jul. 2026.

Copy Citation

Synonyms of crackbrain

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

itinerant

Popular in Grammar & Usage

Democracy or Republic: What's the difference?

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

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

Do you 'say your piece' or 'say your peace'?

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

Popular in Wordplay

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 24

Why do we say 'fly off the handle'?

Popular

Democracy or Republic: What's the difference?

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List

Games & Quizzes