English Reference
verb · noun

ruin

v. · n.
US /ˈɹuən/ UK /ɹˈuːɪn/ ru·in UK spelling ruins

  1. 01 B1 Intermediate

    v.to spoil something so much that it is no longer useful or enjoyable.

    v.to damage something irreparably or to diminish its quality to the point of worthlessness.

    Simple

    The sudden rain ruined our plans for a picnic in the park.

    In context

    The scandal threatened to ruin his professional reputation, undoing decades of meticulous networking and public service.

  2. 02 B2 Upper Intermediate

    v.to make someone or a company lose all their money.

    v.to cause total financial failure or bankruptcy. Transitive use.

    Simple

    The high cost of the lawsuit almost ruined the small family business.

    In context

    Hyperinflation and the collapse of the banking sector effectively ruined thousands of middle-class families overnight.

    bankruptimpoverish
  3. 03 B1 Intermediate

    n.the parts of a building that remain after it has been destroyed or has become very old.

    n.the remains of a building, city, or structure that has suffered collapse or decay. Often used in the plural.

    Simple

    We spent the afternoon exploring the ruins of the ancient castle.

    In context

    The archaeological team spent months excavating the Roman ruins, uncovering mosaics that had been buried for nearly two millennia.

  4. 04 B2 Upper Intermediate

    n.a state of being destroyed or having lost everything, especially money.

    n.the state of being decayed or destroyed; often refers to financial or social collapse.

    Simple

    The gambler's addiction led his family to financial ruin.

    In context

    After the war, the city lay in ruin, with essential infrastructure completely severed and the population displaced.

Usage ruins an overwhelming

As Selena, an illustrator, put it, a single mean message "would ruin" their week.

Phys.org· 19 Aug 2026

From Middle English ruyne, ruine, from Old French ruine, from Latin ruīna (“overthrow, ruin”), from ruō (“to fall down, tumble, sink in ruin, rush”).

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

This entry
Origin Latin ruīna
Level B2 · Upper Intermediate
Frequency Common
Updated