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  1. RUINOUS Definition & Meaning - Merriam-Webster

    The meaning of RUINOUS is dilapidated, ruined.

  2. Ruinous Oath - Official Fisch Wiki

    Jul 10, 2026 · Overall, the Ruinous Oath is a powerful upgrade to the Luminescent Oath, ideal for players aiming to maximize both mutation potential and catch efficiency, particularly during perfect …

  3. RUINOUS | English meaning - Cambridge Dictionary

    / ˈru·ɪ·nəs / causing permanent and severe harm: ruinous costs (Definition of ruinous from the Cambridge Academic Content Dictionary © Cambridge University Press)

  4. RUINOUS Definition & Meaning | Dictionary.com

    RUINOUS definition: bringing or tending to bring ruin; destructive; disastrous. See examples of ruinous used in a sentence.

  5. RUINOUS Synonyms: 86 Similar and Opposite Words | Merriam ...

    3 days ago · Synonyms for RUINOUS: disastrous, fatal, unfortunate, catastrophic, destructive, calamitous, damning, fateful; Antonyms of RUINOUS: happy, fortuitous, fortunate, lucky, providential, …

  6. Ruinous - definition of ruinous by The Free Dictionary

    Define ruinous. ruinous synonyms, ruinous pronunciation, ruinous translation, English dictionary definition of ruinous. adj. 1. Causing or apt to cause ruin; destructive: a ruinous habit; a ruinous rivalry.

  7. Ruinous - Definition, Meaning & Synonyms | Vocabulary.com

    Something ruinous is really terrible or devastating, like a ruinous hurricane that floods your house or the ruinous effect of a new law on a country's poorest citizens.