English Reference

Word

unintended

Phoneticsun·in·tend·ed

US/ˌənɪnˈtɛndɪd/

UK/ˌʌnɪntˈɛndɪd/

Definition

adj. happening by accident rather than on purpose. You use this to describe results or effects that you did not plan for.

adj. not planned or meant to happen; occurring without deliberate intent. Often used to describe secondary consequences or side effects.

Examples

“The new law had several unintended effects on the economy.”

“While the software update fixed the security bug, it caused an unintended crash in the messaging system.”

“Economists often study the unintended consequences of policy changes, where a well-meaning intervention in one sector inadvertently creates a crisis in another due to complex market interdependencies.”

Examples

simple

“The new law had several unintended effects on the economy.”

contextual

“While the software update fixed the security bug, it caused an unintended crash in the messaging system.”

complex

“Economists often study the unintended consequences of policy changes, where a well-meaning intervention in one sector inadvertently creates a crisis in another due to complex market interdependencies.”

Usage

Typically used attributively before a noun; often pairs with 'consequences', 'effects', or 'results'.

Real-World Examples

“Pushback from the fisheries industry was enough for Canada to alter its counter-tariffs by removing dozens of seafood items to avoid unintended consequences to its own economy.”
BBC News · 8 Sept 2026
“The treatment works, but it can still produce an unintended effect.”
ScienceDaily · 6 Aug 2026

Etymology

From un- + intended.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Collocations

unintended consequencesconjunction unintended

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

englishreference.com/q/unintended

English Reference