English Reference

Word

crude

US/ˈkɹud/

UK/kɹˈuːd/

Definitions

01natural and untreated

B2 · Upper Intermediate Science

adj. in a natural state and not yet cleaned or processed.

adj. existing in a natural state and not yet subjected to refining or manufacture.

“The factory processes crude sugar into the white crystals we buy in shops.”

“The environmental impact of transporting crude materials across the ocean remains a significant concern for international regulatory bodies.”

Synonyms

rawunrefineduntreated

Antonyms

02simple or rough

B2 · Upper Intermediate

adj. made in a simple or rough way without much skill.

adj. characterised by a lack of sophistication, detail, or expert workmanship.

“They built a crude shelter out of branches to stay dry during the storm.”

“Early explorers often relied on crude maps that lacked precise longitudinal data but provided essential landmarks for coastal navigation.”

03rude or offensive

C1 · Advanced Informal

adj. rude and likely to offend people.

adj. lacking in culture, refinement, or tact; often used to describe offensive language or jokes.

“He was asked to leave the party after making several crude remarks.”

“The comedian's reliance on crude humour alienated a significant portion of the audience who had expected a more nuanced performance.”

Synonyms

04not adjusted

C1 · Advanced Science Academic · Technical

adj. describing a number or statistic that has not been changed to show more detail.

adj. referring to statistics or data that have not been adjusted for specific factors or variables.

“The crude birth rate shows the number of births per thousand people.”

“While the crude data suggested a correlation, the researchers needed to control for age and income before drawing a final conclusion.”

Synonyms

unadjustedraw

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “crude” in context.

Verb

01. make crude jokes

“He was reprimanded for making crude jokes during the formal dinner.”

verb + adj + noun

02. refine crude oil

“The facility was built specifically to refine crude oil into gasoline.”

verb + adj + noun

Adjective

03. crude oil

“The global economy is heavily dependent on the price of crude oil.”

adj + noun

04. crude to describe

“It would be crude to describe his complex philosophy as mere common sense.”

adj + infinitive

05. somewhat crude

“The initial prototype was somewhat crude, but it proved the concept worked.”

adv + adj

Noun

06. crude approximation

“The sketch provided a crude approximation of what the suspect looked like.”

adj + noun

07. crude awakening

“Investors had a crude awakening when the market crashed overnight.”

adj + noun

08. crude measure

“GDP is often criticized for being a crude measure of a nation's true well-being.”

adj + noun

Real-World Examples

“Haustveit said Washington was also helping to scale up production in Venezuela, noting that the US is sending more than 100,000 bpd of naphtha to the country, where it is blended with heavier crude.”
Al Jazeera 19 Aug 2026
“At the same time, refining capacity – the facilities that convert crude oil into products, such as diesel fuel and gasoline – has been extremely compromised.”
The Conversation 4 Aug 2026

Etymology

From Middle English crude, borrowed from Latin crūdus (“raw, bloody, uncooked, undigested, crude”). Doublet of crudo, from Italian. Cognate with Old English hrēaw (“raw, uncooked”) via Proto-Indo-European *krewh₂- (“raw blood”); more at raw.

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

Word family

ADJECTIVE

crude(C1)

Related words

Domains

GrammarStatistics

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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