Case Attraction and Case Agreement

Latin normally assigns case locally: a noun receives its case from its function in its own clause, while an adjective or appositive copies the features of the noun it describes. Case attraction is the marked exception in which the case of one expression influences another expression that would otherwise have a different case.

The distinction matters because English often hides it. English “who,” “that,” and personal names reveal little or no case, whereas Latin forces a writer to decide whether two words truly agree or merely refer to the same person across two clauses.

Ordinary agreement is the baseline

Adjectives and appositives agree with their head in case because they belong to the same noun phrase or identify the same participant. Their endings need not look identical: grammatical features agree, not final letters.

Both Mārcō and appositive fīliō are dative singular. The giving construction assigns one dative role—recipient—to the whole expression. The full range of this pattern appears under Case Agreement in Appositives.

Mārcum is the direct object of creāvērunt. Predicate cōnsulem identifies what Marcus was elected as and therefore stands in the same accusative. In the passive, both become nominative: Mārcus cōnsul creātus est. This is ordinary predicative agreement, not attraction.

Brevis agrees with nominative feminine singular via; fessōs agrees with accusative masculine plural nautās. The different-looking endings in via brevis still encode the same gender, number, and case.

Relative pronouns normally keep an independent case

A relative pronoun normally agrees with its antecedent in gender and number, but its case comes from its function inside the relative clause. This is the indispensable baseline against which attraction must be recognized.

Nominative puella is the subject of revenit. Accusative quam is the object of vīdistī. English word order may suggest that the adjacent forms make a unit, but each clause assigns its own case.

Here puellae is dative recipient of reddidī, and cui is dative because occurrō governs the dative. Their matching cases are coincidental parallel government, not attraction: each verb independently requires a dative.

Attraction of the relative

In a limited Classical pattern, a relative may take the case of its expressed or understood antecedent instead of the case predicted by its own clause. This is relative attraction. It is far less productive in Latin than in Greek and belongs mainly to compressed (formal) or (literary) syntax. Do not use it as a general alternative to normal relative syntax.

This excerpt from Lucceius's letter to Cicero is reproduced without editorial macrons. Eōrum is genitive after partitive aliquid. The relative quōrum has been drawn into that genitive; in a fully explicit, non-attracted analysis, the things done would be accusative quae with an understood facere. The genitive does not mean that cōnsuēstī regularly governs a genitive.

Attraction is easiest to diagnose when three conditions coincide:

1. the antecedent’s construction clearly requires its visible case;
2. the relative clause appears to require another case, often an accusative object;
3. the relative nevertheless displays the antecedent’s case.

Inverse attraction: the antecedent moves toward the relative

The direction can reverse: a noun that belongs syntactically to the main clause appears in the case required inside the relative clause. This inverse attraction is especially associated with (literary) and (poetic) compression.

The quotation retains its source spelling. In the main clause, “the city” is the subject of est and would regularly be nominative urbs: urbs quam statuō vestra est. Vergil instead gives accusative urbem, matching the object role of quam inside the relative clause. Agreement with feminine singular vestra still reveals the main-clause predication.

Here regular main-clause syntax expects nominative Naucratēs as the subject of erat. Accusative Naucratem is attracted toward quem, the object of convenīre. This is (archaic/literary) evidence from comedy, not a model for neutral prose composition.

Names can be attracted to a dative

With nōmen est “the name is,” the person whose name is being given commonly appears in the dative. The name itself may remain nominative, as an ordinary predicate, or be attracted into that dative. Both patterns are Classical.

In the first sentence, nominative Lūcius is the name predicated of the speaker. In the second, dative Lūciō is attracted to mihi. English expresses possession with “my” and leaves “Lucius” unchanged, so it gives no warning that Latin has two analyses. The dative version is an established idiom, not permission to put any predicate noun into the dative.

A parsing and production test

When two related forms share a case, use this sequence:

1. Divide the sentence into clauses.
2. Assign each head noun or pronoun a role within its own clause.
3. Treat adjectives and true appositives as agreement partners.
4. For a relative, take gender and number from the antecedent but test case inside the relative clause.
5. Call the result attraction only if the visible case overrides that local requirement.
6. In composition, prefer the ordinary non-attracted construction unless reproducing a well-established idiom such as dative nōmen est or deliberately imitating a marked register.

The same surface match can therefore have different causes: Mārcō fīliō is apposition; puellae cui occurristī contains two independently assigned datives; eōrum quōrum cōnsuēstī displays attraction.

Common Mistakes

1. Making every relative copy its antecedent’s case

2. Calling matching cases attraction without checking government

The two datives arise independently; this is not attraction.

3. Making an appositive nominative because English uses an uninflected name

4. Copying poetic inverse attraction into neutral prose

Key Takeaways

Ordinary Latin assigns case by local syntax and then spreads that case through agreement inside a noun phrase. A relative normally copies only gender and number from its antecedent. True case attraction overrides a locally expected case and is restricted or register-marked; inverse attraction is especially literary. Diagnose the structure first and translate only afterward.