-acus
Latin
Etymology
From Gaulish, from Proto-Celtic *-ākos (adjective-forming suffix).
Suffix
-ācus (feminine -āca, neuter -ācum); first/second-declension suffix
- Suffixed to nouns to create adjectives, often substantivised in toponyms.
- Synonym: -ānus
- Aurēlius + -ācus → Aurēliācum
- Paulus + -ācus → Pauliācus
Usage notes
In toponyms, mainly in northern Gaul, -ācus is commonly found appended to personal names, denoting the owner of a property or fundus. Rendered -ac, -at, -y, -é in modern French toponyms.
Declension
First/second-declension adjective.
| Number | Singular | Plural | |||||
|---|---|---|---|---|---|---|---|
| Case / Gender | Masculine | Feminine | Neuter | Masculine | Feminine | Neuter | |
| Nominative | -ācus | -āca | -ācum | -ācī | -ācae | -āca | |
| Genitive | -ācī | -ācae | -ācī | -ācōrum | -ācārum | -ācōrum | |
| Dative | -ācō | -ācō | -ācīs | ||||
| Accusative | -ācum | -ācam | -ācum | -ācōs | -ācās | -āca | |
| Ablative | -ācō | -ācā | -ācō | -ācīs | |||
| Vocative | -āce | -āca | -ācum | -ācī | -ācae | -āca | |
Derived terms
Latin terms suffixed with -acus
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