-acht
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Irish
Alternative forms
Etymology
From Old Irish -acht (compare Scottish Gaelic -achd).
Suffix
-acht f
- Nominal suffix, used to form abstract ideas or nouns roughly corresponding to English -ness, -hood, -ity, or -ure.
Usage notes
- This affix forms feminine nouns of the third declension. Abstract nouns do not have plural forms; however, concepts that refer to concrete items do have plurals in -aí.
Declension
Abstract nouns
Declension of -acht
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Bare forms (no plural for this noun):
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Forms with the definite article:
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Concrete nouns
Declension of -acht
Derived terms
Old Irish
Etymology
From Proto-Celtic *-axtā, suffixal use of Proto-Celtic *axtā.
Suffix
-acht f
Usage notes
After a palatalised consonant, the suffix becomes -echt.
Inflection
| Feminine ā-stem | |||
|---|---|---|---|
| Singular | Dual | Plural | |
| Nominative | -achtL | -achtL | -achtaH |
| Vocative | -achtL | -achtL | -achtaH |
| Accusative | -achtN | -achtL | -achtaH |
| Genitive | -achtaeH | -achtL | -achtN |
| Dative | -achtL | -achtaib | -achtaib |
Initial mutations of a following adjective:
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Derived terms
Descendants
Categories:
- Irish terms inherited from Old Irish
- Irish terms derived from Old Irish
- Irish lemmas
- Irish suffixes
- Irish noun-forming suffixes
- Irish feminine suffixes
- Irish third-declension nouns
- Old Irish terms derived from Proto-Celtic
- Old Irish terms inherited from Proto-Celtic
- Old Irish lemmas
- Old Irish suffixes
- Old Irish noun-forming suffixes
- Old Irish feminine suffixes
- Old Irish ā-stem nouns