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Latin from scratch course › #1: Our first translation from Latin › #1.3: Declensions

Latin from scratch #1.3: The five declensions

In the third class of the Latin from Scratch course, we’ll dive into the five Latin declensions. We’ll summarize what their differences are and learn to recognize what declension nouns belong to.

The combination, the whole set of cases of a word is called declension. In Latin we have five declensions, which we’ll learn to recognize thanks to their statement.

Contents

  • The statement of Latin nouns
  • How to identify the declension of a Latin noun

I explain everything in the following video (⏳ 07m 57s ⌛):

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The statement of Latin nouns

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In order to know which declension a noun belongs to, the statement of the noun is given. The statement is made up of two cases:

  1. nominative singular
  2. genitive singular

These two forms are the ones which appear in the dictionaries, and the ones we have to learn by heart when we study vocabulary. From these two forms we can know what declension a noun belongs to, so we can know the whole declension of the noun.

Let’s give a couple of examples: in the first declension, rosa, rosae, in which rosa is the nominative singular, and rosae, the genitive singular; in the second declension, servus, servi, in which servus is the nominative singular and servi the genitive singular.

How to identify the declension of a Latin noun

From these two forms of the statement (nominative and genitive singular), it is the second one, the genitive, that informs us about the declension, but also about the stem (root) of the word:

  • 1st declension: genitive -ae
  • 2nd declension: genitive -i
  • 3rd declension: genitive -is
  • 4th declension: genitive -us
  • 5th declension: genitive -ei

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This is especially important in the nouns belonging to the third declension, which are the most unpredictable, since the root of the nominative is often different from the one of the genitive, as in caput, capitis, Apollo, Apollinis or iter, itineris.

For this reason, it is useful to practice with this exercise to learn how to identify what declension Latin nouns belong to. You will see it is quite easy once you have understood the routine. It is a simple matter of having memorized and knowing the five endings of the genitive of each declension and, with that information, classify nouns according to their statement.

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Next: The first declension →

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Course content

  1. Quick start
  2. Introduction
  3. Cases and their functions
  4. The five declensions
  5. First declension
  6. Verbal conjugation
  7. Present tense
  8. Second declension
  9. 2-1-2 adjectives
  10. Imperfect past tense
  11. Future tense
  12. Third declension nouns
  13. Third declension adjectives
  14. Perfect past tense
  15. Adverbials of place
  16. Fourth declension
  17. Fifth declension
  18. Pluperfect tense
  19. Possessives
  20. Personal pronouns
  21. Apposition
  22. Predicative complement
  23. Present subjunctive
  24. Imperfect subjunctive
  25. Perfect subjunctive
  26. Perfect future indicative
  27. Pluperfect subjunctive
  28. Syntax of cum
  29. Syntax of ut & ne
  30. Comparison of adjectives
  31. Superlative adjectives
  32. Adverbs from adjectives
  33. Demonstratives
  34. Relative clauses
  35. Passive voice
  36. Deponent verbs
  37. Relative time
  38. Participles: morphology
  39. Participles: syntax
  40. Infinitives
  41. Compounds of sum
  42. Irregular verbs
  43. Imperative

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Latin from Scratch is a project by Paco Álvarez. Follow me on YouTube 📺.