Latin Noun Declensions

All 5 Latin noun declensions with complete paradigm tables for all 7 cases (nominative, genitive, dative, accusative, ablative, vocative, locative), gender rules, and examples.

Latin nouns decline for case (grammatical function) and number (singular/plural). There are 7 cases and 5 declension patterns, identified by the genitive singular ending.

The 5 Declensions at a Glance

Declension Gen. Sg. Ending Typical Gender Dictionary Entry Example
1st -ae Feminine (exceptions: nauta, -ae m.; agricola, -ae m.) puella, -ae, f. girl
2nd -ī Masculine (-us/-er) or Neuter (-um) dominus, -ī, m. / bellum, -ī, n. master / war
3rd -is M, F, or N (must memorize) rex, regis, m. / corpus, corporis, n. king / body
4th -ūs Mostly masculine (domus, -ūs, f. notable exception) manus, -ūs, f. hand
5th -ēī / -eī Mostly feminine (diēs, -eī can be m. or f.) rēs, reī, f. / diēs, diēī, m.f. thing / day

The 7 Cases and Their Functions

Case Function English Equivalent
Nominative Subject of a verb; predicate noun "The girl..."
Genitive Possession, description, partitive "of the girl," "the girl's"
Dative Indirect object; reference "to/for the girl"
Accusative Direct object; object of most prepositions "the girl" (obj.); "toward the girl"
Ablative Separation, means, manner, accompaniment, time, object of some preps. "from/with/by/in the girl"
Vocative Direct address "O girl!"
Locative Place where (city names, domus, rūs, humus only) "at/in Rome" (Rōmae)

Syncretism Rules (Identical Forms)

  • Nominative = Vocative always (except 2nd decl. masc. -us/-er, where voc. = -e/-r)
  • Dative = Ablative always in the plural
  • For neuter nouns: Nominative = Accusative = Vocative always

1st Declension Paradigm

Model: puella, -ae, f. (girl) | Genitive singular: -ae → 1st declension

Case Singular Plural
Nominative puella puellae
Genitive puellae puellārum
Dative puellae puellīs
Accusative puellam puellās
Ablative puellā puellīs
Vocative puella puellae

Note: Nominative and ablative singular differ only by the long ā (macron). In texts without macrons, context determines which is which.

Common 1st decl. nouns: puella (girl), fēmina (woman), terra (land), aqua (water), silva (forest), via (road), porta (gate), vita (life), lingua (tongue/language), rēgīna (queen)

Masculine exceptions: nauta (sailor), agricola (farmer), poēta (poet), incola (inhabitant)

2nd Declension Paradigm

Models: dominus, -ī, m. (master) and bellum, -ī, n. (war) | Gen. sg.: -ī

Case Masc. Sg. Masc. Pl. Neut. Sg. Neut. Pl.
Nominative dominus dominī bellum bella
Genitive dominī dominōrum bellī bellōrum
Dative dominō dominīs bellō bellīs
Accusative dominum dominōs bellum bella
Ablative dominō dominīs bellō bellīs
Vocative domine dominī bellum bella

Note: 2nd decl. masculine vocative singular = -e (not -us): domine! "O master!" Exception: fīlius → vocative fīlī.

-er nouns (2nd decl.): puer, puerī (boy) — retains -e-; ager, agrī (field) — drops -e-. Check genitive to see if -e- is kept.

Common 2nd decl. nouns: puer (boy), liber (book), deus (god), filius (son), amicus (friend), servus (slave), annus (year), campus (plain), ventus (wind)

3rd Declension Paradigm

The 3rd declension is the largest and most varied. Three subtypes: consonant stems, i-stems, and neuter i-stems.

Consonant stem model: rex, regis, m. (king) | Neuter model: corpus, corporis, n. (body)

Case Masc./Fem. Sg. Masc./Fem. Pl. Neut. Sg. Neut. Pl.
Nominative rēx rēgēs corpus corpora
Genitive rēgis rēgum corporis corporum
Dative rēgī rēgibus corporī corporibus
Accusative rēgem rēgēs corpus corpora
Ablative rēge rēgibus corpore corporibus
Vocative rēx rēgēs corpus corpora

i-stem differences (nouns like cīvis, civis, m.; mare, maris, n.):

  • Gen. pl.: -ium (not -um): cīvium
  • Neut. nom./acc. pl.: -ia (not -a): maria
  • Masc./fem. abl. sg.: -ī (not -e): cīvī

Finding the stem: Strip the -is from the genitive singular: rex, reg-is → stem = rēg-.

Common 3rd decl. nouns: miles (soldier), civitas (state), homo (man/human), nox (night), pars (part), lux (light), vox (voice), tempus (time), nomen (name), iter (journey)

4th Declension Paradigm

Model: manus, -ūs, f. (hand) | Neuter model: cornū, -ūs, n. (horn)

Case Masc./Fem. Sg. Masc./Fem. Pl. Neut. Sg. Neut. Pl.
Nominative manus manūs cornū cornua
Genitive manūs manuum cornūs cornuum
Dative manuī manibus cornū cornibus
Accusative manum manūs cornū cornua
Ablative manū manibus cornū cornibus
Vocative manus manūs cornū cornua

Notable: domus, -ūs, f. (house) is partly 4th, partly 2nd declension. domī (locative) = "at home."

5th Declension Paradigm

Model: rēs, reī, f. (thing) | Mixed model: diēs, diēī, m./f. (day)

Case Singular Plural
Nominative rēs rēs
Genitive reī rērum
Dative reī rēbus
Accusative rem rēs
Ablative rē rēbus
Vocative rēs rēs

Most 5th decl. nouns appear only in sg. Rēs and diēs have full plural forms. Rēs pūblica = republic (the public thing/state).

Tips for Memorizing Declensions

  1. Memorize paradigms through a real word, not abstract endings: say puella, puellae, puellae, puellam, puella, puella repeatedly
  2. Use the genitive singular to determine declension when looking up a word — always note it
  3. Learn neuter gender rule: nom. = acc. = voc. always — this halves the forms to memorize for neuters
  4. Group 4th and 5th — they are rare; concentrate on 1st, 2nd, 3rd
  5. Practice with LLPSI — seeing the same forms in meaningful context is more effective than drilling paradigms alone

Reference