English Reference
adjective

crude

adj.
US /ˈkɹud/ UK /kɹˈuːd/ crude UK spelling crudes

  1. 01 B2 Upper Intermediate Science

    in a natural state and not yet cleaned or processed.

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

    Simple

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

    In context

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

    rawunrefineduntreated
  2. 02 B2 Upper Intermediate

    made in a simple or rough way without much skill.

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

    Simple

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

    In context

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

  3. 03 C1 Advanced Informal

    rude and likely to offend people.

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

    Simple

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

    In context

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

    politerefinedtactful
  4. 04 C1 Advanced AcademicTechnical Science

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

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

    Simple

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

    In context

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

    unadjustedraw

Usage crude oil

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

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.

This entry
Origin ine-pro *krewh₂-
Level C1 · Advanced
Frequency Common
Updated