Latin Noun Declensions and Verb Conjugations

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This is a very concise extract of Latin noun declensions and verb conjugations. These are usually the most challenging parts of learning the basics of Latin grammar for a beginner. Once the noun declensions and verb conjugations are learned, the only thing that remains is to learn the vocabulary and read as much as possible.
These paradigms are usually memorized by heart which takes a lot of time and effort. One way to make rote learning easier is to have a system with some minimal basics from which a whole set of material is extractable. This works because the human mind learns procedure better than raw data. With this in mind, I have designed the system below in order to minimize raw data to memorize and introduce procedures to derive all the declension and conjugation paradigms from the raw data.
I have used the famous book Wheelock's Latin to compile the tables below. After learning the paradigms, one can start by going through Wheelock's Latin, or start reading the awesome Latin reading series Lingua Latina Per Se Illustrata by Hans Orberg (also look here). Dawling's Wheel is also a great place to practice the paradigms. For practicing the paradigms on memrise, you can use this course, and for learning the vocabulary from Wheelock's Latin, I recommend this course.
Once the system below is learned, in time, the paradigms will be decoupled from the system by practicing the language and you will have direct access to the paradigms in your mind as if you have memorized them by heart. However, while you are practicing the language, if you find yourself having forgotten a paradigm, you can use the system to derive it in your mind or you can simply refer to this page.

Noun and Adjective Declensions:
Nouns in Latin can appear in these cases: Nominative (viz. N), Genitive (viz. G), Dative (viz. D), Accusative (viz. A), Ablative (viz. Abl), and Vocative (viz. V) in singular and plural (viz. Ns, Gs, Ds, As, Abls, and Vs) forms. Refer to Wheelock's Latin to learn what the function of each grammatical noun case is in Latin.
Nouns also appear in five declensions meaning that there are five patterns that Latin nouns follow in their various cases. Some declensions can have slightly different versions.

Adjectives: All noun declension patterns also apply to adjective declensions. Adjectives fall into two groups: those following the first and second declension patterns (first declension for the feminine and second declension for the masculine and neuter cases) and those following the third declension patterns.

The first thing to memorize is the nominative singular (N) and genitive singular (G) endings of Latin nouns. All the other cases will be derived from these.
In the table below, replace the nominative singular ending with the genitive singular ending to get genitive singular cases (taking into account notes I, II, and III).

1st.
mostly feminine
2nd.
masculine
2nd.
masculine
2nd.I
masculine
2nd.
neuter
3rd.II
3rd.III
3rd.
3rd.
I-stem
3rd.
I-stem
4th.
4th.
5th.
N
a
us
_
_
um
_
_
is
s
e
us
ū
ēs
G
ae
ī
ī
ī
ī
is
is
is
is
is
ūs
ūs
ēī
Latin nouns are usually given in the nominative singular form accompanied by the genitive singular ending in dictionary entries. You can decide the declension paradigm by looking at the genitive singular ending.

The vocative singular of nouns like amicus and of masculine adjectives like magnus ends in -e. The vocative singular of filius and of names ending in -ius ends in a single -i (fili, vergili ); the vocative singular of the masculine adjective meus is mi ; the vocative singular of masculine adjectives ending in -ius ends in -ie (egregius, egregie ). Otherwise the vocative has the same form as the nominative in all declensions.

I. e.g. ager, -gri : ager (N), agri (G), agro (D), agrum (A), agro (Abl), agri (Ns), agrorum (Gs), agris (Ds), agros (As), agris (Abls)
II. e.g. rex, regis : rex (N), regis (G), regi (D), regem (A), rege (Abl), reges (Ns), regum (Gs), regibus (Ds), reges (As), regibus (Abls)
III. e.g. corpus, corporis : corpus (N), corporis(G), corpori (D), corpus (A), corpore (Abl), corpora (Ns), corporum (Gs), corporibus (Ds), corpora (As), corporibus (Abls)

The table below shows how to derive declensions from each other.
  • In each large cell, a heading like G -> Ns , indicates that nominative plural (Ns) endings are derivable from genitive (G) endings using that particular cell.
  • Yellow cells show the endings which are alike.
  • In the second column of each large cell, the endings in parentheses are exceptions. These exceptions occur where the Exceptions column indicate.  For example in the "G -> Ns" cell, in the third row we see "es (a)(ia)" in the Ns column corresponds to "3n, 3in" in the Exceptions column. This means that the ending will be "a" in third declension neuter nouns and "ia" in third declension i-stem neuter nouns (i means i-stem).
  • Consider memorizing this: rows 1,2, and 4 in Ns and rows 1 and 5 in D are equal to those in G. Rows 3,4, and 5 in As are equal to those in Ns. Ds is entirely equal to Abls.
  • Consider that the endings in the 1st column start with a, in the 4th with u, and in the 5th with e, except in the case of Ds.In the 2nd column the endings are either i, o, or u.
G -> Ns
G -> Gs
G -> D
G -> Ds
G
Ns
Exceptions
G
Gs
Exceptions
G
D
Exceptions
G
Ds
Exceptions
ae
ae

ae
ārum


ae
ae



ae
īs





ī
ī (a)
2n
ī
ōrum
ī
ō
ī
īs
is
ēs (a)(ia)
3n, 3in
is
um (ium)
3i
is
ī
is
ibus
ūs
ūs (ua)
4n
ūs
uum


ūs
uī (ū)
4n
ūs
ibus
ēī
ēs

ēī
ērum
ēī
ēī

ēī
ēbus
G -> A
Ns -> As
G -> Abl
Ds = Abls
G
A
Exceptions
Ns
As
Exceptions
G
Abl
Exceptions
ae
am


ae
ās

ae
ā


ī
um
ī
ōs (a)
2n
ī
ō
is
em (_)(e)
3n, 3in
Ns = As
is
e (ī)
3in
ūs
um (ū)
4n
ūs
ū


ēī
em

ēī
ē


Verb Conjugations:
Latin verbs have 5 conjugation paradigms: 1st, 2nd, 3rd, 4th, 3rd(-io).
Each verb can appear in 4 participle forms, which are given in the dictionary entry.
You can read about the tenses, moods, etc. of Latin verbs in Wheelock's Latin.
There is also an appendix named "Svmmarivm Formarvm" at the end of the book which lists all the verb conjugations.

In the tables take notice of these:
  • 1s = first person singular, 1pl = first person plural, etc.
  • When you see something like "x/y/z3", it means "x" for the case of the first conjugation, "y" for the second, and "z" for all the other cases.
  • "_" means that there should be nothing in its place. "<- y" means replace the letter immediately before where "y" should have happened with "y".
  • Also note that long vowels indicated by a dash over a vowel, are approximated here and not exact (you can learn about long and short vowel rules in Wheelock's Latin).

Simple Tenses (Indicative, Imperfect, Future):
Simple tenses are conjugated by taking the root of the verb (by dropping the ending off of the 2nd participle form of the verb with some slight modifications explained below), adding a flag (explained below), and adding the verb endings.

For getting the root of a verb:
  • For the 1st conjugation, drop "are" from the end of the second participle form of the verb.
  • For the 2nd and 3rd conjugations, drop "ere" from the end of the second participle form of the verb.
  • For the 4th conjugation, drop "re" form the end of the second participle form of the verb (an "i" will remain naturally).
  • For the 3rd (-io) conjugation, drop "ere" from the end of the second participle form of the verb and add an "i".

The table below, shows the verb endings of the simple tenses including the exceptions and where those exceptions occur.
(second participle - re + flag +)  Verb Endings
Person
Active
Passive
Exception
When
Active
Passive
1s
m
r
ō
or
present indicative
o2/m3
or2/r3
future indicative
2s
s
ris


3s
t
tur
1pl
mus
mur
2pl
tis
minī
3pl
nt
ntur
The table below shows the flag letters. This is a set of letters (or a single letter) that should be added between the root of the verb and the verb ending.
(second participle - re +) Flag (+  verb endings)
Mood
Tense
Flag
Exception
When
indicative
present
ā/ē/i/_2

_ /ē/_ 3
1s
ā/ē/e/i/<-e
2s passive
ā/ē/u3
3pl
imperfect
āba/ēba4

future
ābi/ēbi/ē3
āb/ēb/a3
1s
ābe/ēbe/e3
2s passive
ābu/ēbu/e3
3pl
subjunctive
present
e/ea/a3

imperfect
infinitive ending*
*  in the imperfect tense of the subjunctive, just take the second participle form in its entirety and add the verb endings.
Perfect Tenses (Perfect, Pluperfect, Future Perfect):
Perfect tenses in the active form are constructed thus:
  • Drop the "i" from the end of the 3rd participle to get the root.
  • In the case of the indicative perfect tense, add the endings in the corresponding cell in the table below (ī, istī, it, imus, istis, ērunt for 1s, 2s, 3s, 1pl, 2pl, 3pl persons respectively) to the 3rd participle root.
  • In all the other cases, add the corresponding flag to the 3rd participle root (taking into account the exceptions) and add the corresponding active verb ending.
Perfect tenses in the passive form are made out of two words: the adjective and the verb.
  • For constructing the adjective, take the 4th participle of the verb (which is already in adjectival form) and adopt the correct ending (see the part on noun declension).
  • For constructing the verb, in case of the indicative perfect tense, take the appropriate verb from the table below (sum, es, est, sumus, estis, sunt for 1s, 2s, 3s, 1pl, 2pl, 3pl persons respectively).
  • For all the other cases, take the corresponding flag from the table below and attach the appropriate active verb ending (taking into account the exceptions).
Active = (third participle - ī +) Flag (+ active verb endings)
Passive = (fourth participle +) Flag (+ active verb endings)
Mood
Tense
Flag
Exception
When
Active
Passive

ind.
perf.
ī, istī, it, imus, istis, ērunt
sum, es, est, sumus, estis, sunt




pluperf.
erā
fut. perf.
eri
er
1s
eru
3pl passive
subj.
perf.
eri
si




pluperf.
isse
esse