English

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Etymology

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From Middle English ruynous, from Old French ruinos, ruineus, from Latin ruīnōsus. By surface analysis, ruin +‎ -ous.

Pronunciation

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Adjective

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ruinous (comparative more ruinous, superlative most ruinous)

  1. Causing ruin; destructive, calamitous
  2. Extremely costly; so expensive as to cause financial ruin.
    They were forced to completely replace the roof at ruinous expense.
  3. Characterized by ruin; ruined; dilapidated; as, an edifice, bridge, or wall in a ruinous state.

Synonyms

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Derived terms

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Translations

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Further reading

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Anagrams

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