accident

American  

[ak-si-duhnt] / ˈæk sɪ dənt /

noun

1. an undesirable or unfortunate happening that occurs unintentionally and usually results in harm, injury, damage, or loss; casualty; mishap.

   automobile accidents.

   Synonyms:

   disaster, contingency, misadventure, misfortune, mischance

2. Law. such a happening resulting in injury that is in no way the fault of the injured person for which compensation or indemnity is legally sought.

3. any event that happens unexpectedly, without a deliberate plan or cause.

4. chance; fortune; luck.

   I was there by accident.

   Antonyms:

   intent, design

5. a fortuitous circumstance, quality, or characteristic.

   an accident of birth.

6. Philosophy. any entity or event contingent upon the existence of something else.

7. Geology. a surface irregularity, usually on a small scale, the reason for which is not apparent.

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accident British  

/ ˈæksɪdənt /

noun

1. an unforeseen event or one without an apparent cause

2. anything that occurs unintentionally or by chance; chance; fortune

   I met him by accident

3. a misfortune or mishap, esp one causing injury or death

4. Also called: adjunct.  logic philosophy a nonessential attribute or characteristic of something (as opposed to substance)

5. metaphysics a property as contrasted with the substance in which it inheres

6. geology a surface irregularity in a natural formation, esp in a rock formation or a river system

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Other Word Forms

• postaccident adjective

Etymology

Origin of accident

First recorded in 1350–1400; Middle English, from Latin accident-, stem of accidēns “happening,” present participle of accidere “to befall, happen,” from ac- ac- + -cidere, combining form of cadere “to fall”

Explanation

An accident is an unfortunate event. By their very nature, accidents are not planned. Rear-ending the car ahead of you, spilling milk, losing your footing on an icy sidewalk — all of these are considered accidents. You will most often hear people use accident to describe an unfortunate mistake, like swerving into oncoming traffic or making a sloppy calculation. However, an accident could have a positive outcome as well: "The invention of the chocolate chip cookie was a happy accident, occurring when the cook decided to add the chopped chocolate to the batter without melting it first."

Example Sentences

But every once in a while, we get a little wink, an ounce of good luck, an unearned gift, a happy accident, and this recipe falls in that category.

From Salon • Apr. 13, 2026

The Montana ranch where he lives now, surrounded by fir and pine trees, the shadows of the Bitterroots and silence, is the perfect retirement home, although it’s one Vachon found more by accident than design.

From Los Angeles Times • Apr. 12, 2026

Unlike most states, New York lets individuals claim damages for injuries and vehicle damage from their insurer no matter who’s to blame for an accident.

From The Wall Street Journal • Apr. 12, 2026

As for Mr. Dylan, following a 1966 motorcycle accident he retrenched and issued “John Wesley Harding,” an almost aggressively minimalist departure from the maximalist work that preceded it.

From The Wall Street Journal • Apr. 8, 2026

“It wasn’t an accident and we did nothing wrong,” Maya-Jade said.

From "Not Nothing" by Gayle Forman

Related Words

• calamity
• casualty
• disaster
• hazard
• mishap
• pileup
• setback