Irish

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Etymology

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From toit (smoke) +‎ díonach (impermeable, proof).

Adjective

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toitdíonach (genitive singular masculine toitdíonaigh, genitive singular feminine toitdíonaí, plural toitdíonacha, comparative toitdíonaí)

  1. fireproof
    Synonym: dódhíonach

Declension

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Mutation

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Irish mutation
Radical Lenition Eclipsis
toitdíonach thoitdíonach dtoitdíonach
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.