When a Latin noun or name is presented in isolation—on a vocabulary list, as a label, or in answer to “what is it called?”—the nominative normally serves as its citation form. Thus a dictionary begins with servus, not servum, and a Roman's full name is conventionally cited as Gāius Iūlius Caesar. The nominative is the form selected to name the lexeme; it is not necessarily its stem and does not remain frozen when the word enters a sentence.
Naming inside a clause creates a related but distinct pattern. With nōmen est or a passive verb such as appellātur “is called,” the name can stand as a predicate nominative. With an active naming verb, both the person named and the name assigned are normally accusative. English leaves “Lucius” unchanged in all three settings, so English speakers must learn to distinguish citation from syntax.
The nominative as the citation form
A noun's headword is conventionally its nominative singular, followed by enough information to recover its declension and gender. For rēx, rēgis m. “king,” nominative rēx is the citation form, but genitive rēgis reveals the base rēg- used in the oblique cases. Citation form and stem are therefore not synonyms.
| Entry | Citation form | Base shown by genitive | Accusative singular |
|---|---|---|---|
| servus, servī m. | servus | serv- | servum |
| rēx, rēgis m. | rēx | rēg- | rēgem |
| corpus, corporis n. | corpus | corpor- | corpus |
| manus, manūs f. | manus | manu- | manum |
In indice vocābulōrum servus, servī discimus, nōn servus tantum.
On a vocabulary list we learn servus, servī, not just servus.
This is (academic, teaching language) rather than ordinary Roman conversation. The pair preserves the nominative citation form and the diagnostic genitive. The visible -us of servus cannot simply be treated as a base to which another ending is added.
In grammatical discussion, an explicitly quoted form can itself be mentioned rather than used. Such a quotation is syntactically opaque: the cited string stays exactly as cited even when its visible ending resembles a different case.
‘Servus’ nōminātīvus singulāris est; ‘servī’ etiam genitīvus singulāris esse potest.
Servus is nominative singular; servī can also be genitive singular.
This too is (academic) metalanguage. The quotation marks are modern editorial punctuation. In the second clause, the string servī is being discussed as a form; it is not functioning as a genitive dependent inside that sentence.
Naming with nōmen est
Latin commonly expresses “my name is Lucius” as “the name Lucius is to me.” The possessor stands in the dative, nōmen is the nominative subject, and the personal name is ordinarily a predicate nominative.
Mihi nōmen est Lūcius; quod tibi nōmen est?
My name is Lucius; what is your name?
Huic puellae nōmen est Tullia; idem nōmen aviae eius est.
This girl's name is Tullia; her grandmother has the same name.
In the second sentence, dative huic puellae identifies the bearer of the name, nominative nōmen is the grammatical subject, and nominative Tullia supplies the name. Do not turn Tullia into neuter Tullium to imitate the gender of nōmen: a predicate noun keeps its own lexical gender.
Classical authors also use dative attraction, in which the name is drawn into the case of the person who bears it. This is a real literary construction, not a printing error, but the nominative pattern is clearer for beginning production. Vergil writes (literary):
At puer Ascanius, cui nunc cognomen Iulo additur ...
But the boy Ascanius, to whom the surname Iulus is now added ...
The attributed text is reproduced without added macrons. Iūlō is dative because it is attracted toward dative cui; a more mechanically transparent analysis would have nominative Iūlus as the name added. When reading, accept both patterns where the syntax supports them. When composing at A1, use mihi nōmen est Lūcius.
Passive and active verbs of naming
Passive vocor “I am called,” appellor “I am named/called,” and related verbs place both the subject and its assigned name in the nominative.
Puer Gāius vocātur, sed nōn omnēs eum Gāium appellant.
The boy is called Gaius, but not everyone calls him Gaius.
The first clause has nominative puer and predicate nominative Gāius with passive vocātur. In the active second clause, accusative eum is the person named and accusative Gāium is the name applied to him. English “Gaius” obscures this change because English proper names do not decline.
Flūmen quod per urbem fluit Tiberis appellātur.
The river that flows through the city is called the Tiber.
Nominative flūmen is neuter, while predicate nominative Tiberis is masculine. The two share case but do not have to share gender, just as other predicate nouns do not.
Parentēs fīliam suam Cornēliam appellāvērunt.
The parents named their daughter Cornelia.
Here active appellāvērunt governs direct object fīliam suam and object complement Cornēliam. The name is not a nominative citation form inside this active clause.
Personal names: cited together, declined together
The standard citation form of a Roman male name places its components in the nominative: praenomen, nomen, and cognomen. The details of that naming system belong to Roman Names and Forms of Address; the grammatical point is that every declinable component participates in sentence syntax.
Gāius Iūlius Caesar post bellum Rōmam rediit.
Gaius Julius Caesar returned to Rome after the war.
All three components are nominative because the full name is the subject of rediit. Compare the object construction:
Mīlitēs Gāium Iūlium Caesarem secūtī sunt.
The soldiers followed Gaius Julius Caesar.
Here Gāium, Iūlium, and Caesarem are all accusative. Keeping any component in its nominative citation form would be like refusing to decline an ordinary appositive.
The same principle applies to a common noun followed by a proper name. In urbs Rōma, “the city Rome,” the two nouns are appositional and match in case.
Urbs Rōma multa templa habet; ex urbe Rōmā hodiē proficīscimur.
The city of Rome has many temples; today we are setting out from the city of Rome.
Nominative urbs Rōma becomes ablative ex urbe Rōmā. English can leave “Rome” visually unchanged after “from”; Latin marks the relation on both appositional nouns.
Labels, headings, and running syntax
Maps, genealogies, captions, and vocabulary lists often use isolated nominatives because they simply identify a referent. This is an elliptical labeling convention, not proof that names are indeclinable. (Formal) inscriptions are especially varied: a nominative may identify a dedicator, a dative may name the recipient or deity, and a genitive may identify the deceased. The formula, not the physical prominence of the name, decides its case.
Likewise, a work's title has a conventional citation wording, but when title words are integrated into a Latin sentence, their internal form may reflect the title itself or the syntax of the surrounding reference. There is no rule “titles are always nominative.” Learn a title as transmitted and parse the larger construction.
A practical diagnostic
When a noun or name looks nominative, ask three questions. Is it merely being listed or quoted? Is it a subject or predicate complement licensed by a finite clause? Or has someone copied a citation form into a position where Latin requires another case? The first two are legitimate nominative uses. The third is an English-speaker error.
Common Mistakes
1. Treating the citation form as the stem
❌ Rēxem in forō vīdī.
Incorrect: rēx is the nominative citation form, but the genitive rēgis reveals the base rēg-.
✅ Rēgem in forō vīdī.
I saw the king in the forum.
2. Freezing a place-name in the nominative
❌ Crās Rōma eō.
Incorrect for motion to Rome: Rōma is the nominative citation form, not the form required for destination.
✅ Crās Rōmam eō.
Tomorrow I am going to Rome.
3. Leaving a full personal name undeclined as an object
❌ Senātōrēs Gāius Iūlius Caesar timēbant.
Incorrect: the cited full name has been copied into an accusative object position.
✅ Senātōrēs Gāium Iūlium Caesarem timēbant.
The senators feared Gaius Julius Caesar.
4. Making the name agree in gender with nōmen
❌ Huic puellae nōmen est Tullium.
Incorrect: Tullia is a predicate noun naming the girl; it does not become neuter to match nōmen.
✅ Huic puellae nōmen est Tullia.
This girl's name is Tullia.
Key Takeaways
The nominative is Latin's normal citation form and often its labeling form. In a naming clause, a name can also be predicate nominative with nōmen est or a passive naming verb. Neither use makes the word indeclinable: active object complements, destinations, possession, and other relations require the case licensed by their own syntax.
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- How to Read a Dictionary EntryA1 — Decode Latin headwords, genitives, genders, principal parts, abbreviations, and case requirements in a dictionary entry.
- Proper Names and Foreign NamesC1 — Decline Latin personal names and recognize the different degrees to which Greek and other foreign names were adapted to Latin morphology.
- Roman Names and Forms of AddressA1 — How Roman personal names, filiations, abbreviations, and vocatives encode identity, status, and social relationships.