From Iúdach, from Old Irish Iúdae (“Jew”) + -ach, from Latin iūdaeus, from Ancient Greek Ἰουδαῖος (Ioudaîos), from Biblical Hebrew יְהוּדִי (yəhûḏî). The initial G- arose from a reinterpretation of the sound /j/ as the lenited form of /ɟ/.
Giúdach (genitive singular masculine Giúdaigh, genitive singular feminine Giúdaí, plural Giúdacha, not comparable)
| Singular | Plural (m/f) | |||
|---|---|---|---|---|
| Positive | Masculine | Feminine | (strong noun) | (weak noun) |
| Nominative | Giúdach | Ghiúdach | Giúdacha; Ghiúdacha² | |
| Vocative | Ghiúdaigh | Giúdacha | ||
| Genitive | Giúdaí | Giúdacha | Giúdach | |
| Dative | Giúdach; Ghiúdach¹ |
Ghiúdach; Ghiúdaigh (archaic) |
Giúdacha; Ghiúdacha² | |
| Comparative | (not comparable) | |||
| Superlative | (not comparable) | |||
¹ When the preceding noun is lenited and governed by the definite article.
² When the preceding noun ends in a slender consonant.
Giúdach m (genitive singular Giúdaigh, nominative plural Giúdaigh)
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Bare forms:
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Forms with the definite article:
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| Irish mutation | ||
|---|---|---|
| Radical | Lenition | Eclipsis |
| Giúdach | Ghiúdach | nGiúdach |
| Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. | ||