blunder

1 of 2

verb

blun·​der ˈblən-dər 

blundered; blundering ˈblən-d(ə-)riŋ 

intransitive verb

1

: to move unsteadily or confusedly

In their exhaustion they often blundered against each other …

—Norman Mailer

2

: to make a mistake through stupidity, ignorance, or carelessness

blundered by not acting sooner

transitive verb

1

: to utter stupidly, confusedly, or thoughtlessly

blundered an apology

2

: to make a stupid, careless, or thoughtless mistake in

… blundering matters through ignorance …

—Rafael Sabatini

blunderer

ˈblən-dər-ər 

noun

blunder

2 of 2

noun

: a gross error or mistake resulting usually from stupidity, ignorance, or carelessness

a costly tactical blunder

Synonyms

Verb

• boob [British]
• err
• flub
• fluff
• foul up
• fumble
• goof (up)
• louse up
• mess (up)
• screw up
• slip up
• stumble
• trip

Noun

• bobble
• boo-boo
• boob [British]
• brick
• clanger [British]
• clinker
• error
• fault
• flub
• fluff
• fumble
• gaff
• gaffe
• goof
• inaccuracy
• lapse
• miscue
• misstep
• mistake
• oversight
• screwup
• slip
• slipup
• stumble
• trip

Choose the Right Synonym for blunder

error, mistake, blunder, slip, lapse mean a departure from what is true, right, or proper.

error suggests the existence of a standard or guide and a straying from the right course through failure to make effective use of this.

procedural errors

mistake implies misconception or inadvertence and usually expresses less criticism than error.

dialed the wrong number by mistake

blunder regularly imputes stupidity or ignorance as a cause and connotes some degree of blame.

diplomatic blunders

slip stresses inadvertence or accident and applies especially to trivial but embarrassing mistakes.

a slip of the tongue

lapse stresses forgetfulness, weakness, or inattention as a cause.

a lapse in judgment

Examples of blunder in a Sentence

Verb

We blundered along through the woods until we finally found the trail.

Another skier blundered into his path.

The government blundered by not acting sooner.

Noun

The accident was the result of a series of blunders.

fixed a minor blunder in the advertising flyer

Recent Examples on the Web

Verb

Ali sidestepped it, and Foreman blundered, swapping positions with his challenger, as Ali clubbed him with a head-dazing right blow. —Mikal Gilmore, Rolling Stone, 17 Jan. 2025

Continue reading … Click here for more cartoons… MEDIA TELEVISION DRAMA – ABC News hit with embarrassing headlines from David Muir's clothespin blunder to Sunny Hostin's husband drama. —Fox News, 10 Jan. 2025

Noun

Scientists have long known that DNA-copying systems make the occasional blunder—that’s how cancers often start—but only in recent years has technology been sensitive enough to catalog every genetic booboo. —Amber Dance, Smithsonian Magazine, 17 Jan. 2025

The blunder occurred during the triple toss-up round on Thursday, January 16. —Aaron Rasmussen, Newsweek, 17 Jan. 2025

Word History

Etymology

Verb

Middle English blundren, probably of Scandinavian origin; akin to Old Norse blunda to shut one's eyes, doze, Norwegian dialect blundra

Noun

noun derivative of blunder entry 1

First Known Use

Verb

14th century, in the meaning defined at intransitive sense 1

Noun

1681, in the meaning defined above

Kids Definition

blunder

1 of 2 verb

blun·​der ˈblən-dər 

blundered; blundering -d(ə-)riŋ 

1

: to move unsteadily or blindly

2

: to make a mistake (as through stupidity or carelessness)

3

: to say stupidly or thoughtlessly : blurt

blunderer

-dər-ər 

noun

blunder

2 of 2 noun

: a bad or stupid mistake