ENGLISH
REFERENCE

accident

n. countable
A2 Elementary Oxford US //ˈæksədənt// UK //ˈæksɪdənt// ac·ci·dent General-service Humorous Vulgar

n. something bad that happens by mistake, like a car crash or falling down. It can also mean something that happens by chance without anyone planning it.

n. an unfortunate incident that happens unexpectedly and unintentionally, typically resulting in damage or injury. Also used to describe an event that occurs by chance rather than through deliberate planning.


SIMPLE

He had a small accident on his bike yesterday.

CONTEXTUAL

The police arrived quickly to clear the road after the minor traffic accident blocked two lanes.

COMPLEX

While the discovery appeared to be a happy accident, subsequent analysis revealed that the researchers had been subconsciously following a trail of subtle clues for months.

Synonyms
Origin

Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *ḱh₂d-der. Proto-Italic *kadō Latin cadō Latin accidō Latin accidēns Old French accidentbor. Middle English accident English accident First attested in the late 14th century. From Middle English accident, from Old French accident, from Latin accidēns, present active participle of accidō (“happen”); from ad (“to”) + cadō (“fall”). See cadence, case. In the sense “unintended pregnancy”, first attested in 1932.

Usage

Often used with the preposition 'by' to describe events that happen without intention.

Pitfall

I met him by an accidentI met him by accidentWhen describing something that happens by chance, the phrase 'by accident' is a fixed idiom and does not take an article.

Idioms3 entries

© 2026 English Reference