English Reference
adjective

vicious

adj.
US /ˈvɪʃəs/ UK /vˈɪʃəs/ vi·cious

  1. 01 B2 Upper Intermediate

    very violent and cruel, often with the intent to hurt someone badly.

    characterized by a desire to inflict pain or suffering; deliberately cruel or violent.

    Simple

    The newspaper reported a vicious attack on a young man in the park.

    In context

    The dictator was known for his vicious treatment of political rivals, often using the secret police to silence any form of dissent.

  2. 02 B2 Upper Intermediate

    describing an animal that is dangerous and likely to bite or attack.

    dangerously aggressive or savage, typically used of animals prone to unprovoked attacks.

    Simple

    Keep your distance because that dog can be quite vicious with strangers.

    In context

    The hikers were warned that the mother bear could become vicious if she felt her cubs were being threatened by their presence.

    tamedocile
  3. 03 B2 Upper Intermediate

    very strong, severe, or unpleasant.

    possessing a high degree of intensity or severity, often in a way that causes physical or mental distress.

    Simple

    She had a vicious headache that lasted for the entire afternoon.

    In context

    The sailors struggled to keep the ship upright as a vicious storm battered the hull with relentless waves.

  4. 04 C2 Proficiency ArchaicLiterary

    having a bad character or doing things that are morally wrong.

    characterized by vice, immorality, or depravity.

    Simple

    The old stories warn against leading a vicious life full of greed.

    In context

    In the Victorian novel, the antagonist is depicted as a vicious character whose soul has been corrupted by a lifetime of indulgence and crime.

Usage vicious campaign · vicious circle

He added: “For more than a week, the rightwing press, politicians and the far right have hounded Jason with the most vicious racism.

The Guardian· 16 Aug 2026

Fewer people has therefore resulted in a vicious circle of fewer services and jobs in 'Empty Spain'.

The Local· 14 Aug 2026

PIE word *dwóh₁ From Middle English vicious, from Anglo-Norman vicious, (modern French vicieux), from Latin vitiōsus, from vitium (“fault, vice”). Equivalent to vice + -ous.

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

This entry
Origin Latin vitiōsus
Level C1 · Advanced
Frequency Frequent
Updated