English Reference
adjective

chronic

adj.
US /ˈkɹɑnɪk/ UK /kɹˈɒnɪk/ chron·ic UK spelling chronics

  1. 01 B2 Upper Intermediate Medicine

    continuing for a long time or happening again and again.

    persisting over a long period of time or constantly recurring. Often used to describe medical conditions or systemic social problems.

    Simple

    My grandfather suffers from chronic back pain that makes it hard for him to walk.

    In context

    The region faces a chronic shortage of clean water, a crisis that has been exacerbated by several years of record-breaking drought.

    Pitfall
    He has a chronic pain in his leg today. He has an acute pain in his leg today.

    Use 'chronic' for long-term issues. For a sudden, sharp, or short-term problem, use 'acute'.

  2. 02 C1 Advanced Formal

    doing something bad as a habit that is hard to stop.

    inveterate or habitual in behavior, typically regarding a negative trait or condition.

    Simple

    He is a chronic liar who cannot be trusted even with small details.

    In context

    The department was plagued by chronic underperformance, largely due to a lack of clear leadership and accountability.

  3. 03 C1 Advanced British EnglishInformal

    of very poor quality; terrible.

    extremely bad, intense, or of poor quality.

    Simple

    The service at that restaurant was absolutely chronic, so we left without eating.

    In context

    The weather during our holiday was chronic, with relentless rain and wind that kept us indoors for the entire week.

Usage chronic stress · chronic conditions · chronic pain

Chronic exposure to even low levels of PFAS has been linked to liver damage, high cholesterol, reduced immune responses, low birth weights and several kinds of cancer.

The Local· 12 Aug 2026

Parent-carers of disabled children are exposed to chronic levels of extreme stress and often reach crisis point before help is available – then they face a ‘fight for basic support’, experts say.

The Guardian· 11 Aug 2026

From chronical, from Old French cronike, from Latin chronicus, from Ancient Greek χρονικός (khronikós, “of time”), from χρόνος (khrónos, “time”). By surface analysis, chron- + -ic.

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

This entry
Origin Ancient Greek χρονικός
Level C1 · Advanced
Frequency Common
Updated