-acht

See also: acht, Acht, ächt, and åcht

Irish

-acht f

Nominal suffix, used to form abstract ideas or nouns roughly corresponding to English -ness, -hood, -ity, or -ure.

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 of -acht

Third declension

Bare forms (no plural for this noun):

Declension of -acht

Third declension

Bare forms:

Irish terms suffixed with -acht

From Proto-Celtic *-axtā, suffixal use of Proto-Celtic *axtā.

-acht f

After a palatalised consonant, the suffix becomes -echt.

Feminine ā-stem
	Singular	Dual	Plural
Nominative	-acht^L	-acht^L	-achta^H
Vocative	-acht^L	-acht^L	-achta^H
Accusative	-acht^N	-acht^L	-achta^H
Genitive	-achtae^H	-acht^L	-acht^N
Dative	-acht^L	-achtaib	-achtaib
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Old Irish terms suffixed with -acht

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