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Appendix:Latin first declension

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Latin words of the first declension have an invariable stem and are generally of feminine gender. The predominant letter in the ending forms of this declension is a. The nominative singular form consists of the stem and the affix -a, and the genitive singular form is the stem plus -ae.

There is a small category of masculine exceptions which generally refer to occupations. These include 'farmer' (agricola, agricolae masc.), 'sailor' (nauta, nautae masc.), 'charioteer' (aurīga, aurīgae masc.), 'inhabitant' (incola, incolae masc.), 'pirate' (pīrāta, pīrātae masc.), 'writer' (scrība, scrībae masc.), and 'poet' (poēta, poētae masc).

The first declension also holds three types of Greek nouns, derived from Ancient Greek's Alpha Declension. They are declined irregularly in the singular. Occasionally, these Greek nouns may be declined as if they were native Latin nouns, e.g. nominative athlēta may be used instead of the original athlētēs.


  • The older genitive singular termination is an –ās. This is often used with familia as in pater familiās and māter familiās.
  • In poetry, the genitive singular –āī occurs. Aquae becomes aquāī.
  • The genitive plural ending –um replaces –ārum. This is actually a contraction. Puellum.
  • Because first declension nouns and second declension nouns display an –īs in the dative and ablative plural, words like equus (horse) and equa (mare) will end up looking alike in these cases. However, if a distinction must be made, equīs for 'mares' would become equābus in the dative and ablative plural.

Declension paradigms

stēlla, -ae f.

Case Singular Plural
nominative stēlla stēllae
genitive stēllae stēllārum
dative stēllae stēllīs
accusative stēllam stēllās
ablative stēllā stēllīs
vocative stēlla stēllae
locative stēllae stēllīs

Greek nouns

nymphē, -ēs f.

Case Singular Plural
nominative nymph·ē nymph·ae
genitive nymph·ēs nymph·ārum
dative nymph·ae nymph·īs
accusative nymph·ēn nymph·ās
ablative nymph·ē nymph·īs
vocative nymph·ē nymph·ae
locative nymph·ae nymph·īs

comētēs, -ae m.

Case Singular Plural
nominative comēt·ēs comēt·ae
genitive comēt·ae comēt·ārum
dative comēt·ae comēt·īs
accusative comēt·ēn / comēt·am comēt·ās
ablative comēt·ā comēt·īs
vocative comēt·ē / comēt·a comēt·ae
locative comēt·ae comēt·īs

xiphiās, -ae m.

Case Singular Plural
nominative xiphi·ās xiphi·ae
genitive xiphi·ae xiphi·ārum
dative xiphi·ae xiphi·īs
accusative xiphi·ān / xiphi·am xiphi·ās
ablative xiphi·ā xiphi·īs
vocative xiphi·ā xiphi·ae
locative xiphi·ae xiphi·īs

See also