Relative Pronouns
Quī, quae, quod — "who, which, that" — is one Latin word doing three jobs. As a RELATIVE it hooks a clause onto a noun (vir quī vēnit, "the man who came").
As an INTERROGATIVE adjective it asks "which?" (quī vir?, "which man?"). And after sī, nisi, num, nē it slips into being an INDEFINITE — "any" (sī quis vēnerit, "if anyone comes").
The substantive interrogative quis, quid ("who?", "what?") and the relatives of quantity quantus, quālis, quot round out the family.
The forms are notoriously irregular and high-frequency. Memorize the genitive cuius and dative cuī — they hold for all three genders, singular only — and the dative/ablative plural quibus.
The big trap is the neuter: relative quod vs. substantive interrogative quid. Same root, different jobs. Get the paradigm in your fingers and three-quarters of every Caesar paragraph opens up.
Learnings0 core · 2 AP claims
AP framework claims (2)— verbatim from AP CED
Same root qu-, four functions. Tell them apart by what's around them — statement vs. question vs. sī / nisi / num / nē.
The shared genitive cuius and dative cuī (all genders, singular) are the giveaway that you're inside the quī-family and not in the second declension proper.
| Case | M. Sg. | F. Sg. | N. Sg. | M. Pl. | F. Pl. | N. Pl. |
|---|---|---|---|---|---|---|
| Nom. | quī | quae | quod | quī | quae | quae |
| Gen. | cuius | cuius | cuius | quōrum | quārum | quōrum |
| Dat. | cuī | cuī | cuī | quibus | quibus | quibus |
| Acc. | quem | quam | quod | quōs | quās | quae |
| Abl. | quō | quā | quō | quibus | quibus | quibus |
| Case | M./F. Sg. | N. Sg. | M./F. Pl. | N. Pl. |
|---|---|---|---|---|
| Nom. | quis | quid | quī | quae |
| Gen. | cuius | cuius | quōrum | quōrum |
| Dat. | cuī | cuī | quibus | quibus |
| Acc. | quem | quid | quōs | quae |
| Abl. | quō | quō | quibus | quibus |
| Case | M. Sg. | F. Sg. | N. Sg. | M. Pl. | F. Pl. | N. Pl. |
|---|---|---|---|---|---|---|
| Nom. | quis / quī | qua (quae) | quid / quod | quī | quae | qua (quae) |
| Gen. | cuius | cuius | cuius | quōrum | quārum | quōrum |
| Dat. | cuī | cuī | cuī | quibus | quibus | quibus |
| Acc. | quem | quam | quid / quod | quōs | quās | qua (quae) |
| Abl. | quō | quā | quō | quibus | quibus | quibus |
| Case | Form | Type | Meaning | Correlative |
|---|---|---|---|---|
| quantus, -a, -um | 1st/2nd-decl. adj. | interr. + rel. | "how great / as great as" | tantus, -a, -um ("so great") |
| quālis, -e | 3rd-decl. adj. (i-stem) | interr. + rel. | "of what kind / such as" | tālis, -e ("of such a kind") |
| quot | indeclinable | interr. + rel. | "how many / as many as" | tot ("so many") — also indecl. |
| quotus, -a, -um | 1st/2nd-decl. adj. | interr. + rel. | "which in order / how many-th" | totus (rare in this sense) |
See It In Action
— B. G. v. 35
Notice quī: masculine singular (matching Balventius) and nominative (because it's the subject of dūxerat inside the relative clause). Gender/number from antecedent, case from job in own clause.
— B. G. iv. 7
Caesar shows the full A&G construction: antecedent loca in the main clause AND repeated as locīs inside the relative. Quibus is ablative because of in, plural because loca is plural.
— adapted (canonical paradigm form)
Cuius is the same single form for all three genders in the singular. It tells you the genitive job — possession — without telling you the gender; that you read off the antecedent (puella, fem.).
— Ov. Tr. i. 5. 47
Quot ... tot is the relative-quantitative pair for number. Both are indeclinable — they never change form. Render the quot clause with English "as."
Both are neuter singular. Both translate "what." The form difference is one letter and the job is completely different.
neuter sg. of quī, quae, quod — refers to a neuter antecedent OR modifies a neuter noun
flūmen quod vidēmus
the river which we see
neuter sg. standing alone — "what?" (in question) or "anything" (after sī)
quid vidēs?
what do you see?
Tip: Ask: is there a neuter NOUN it agrees with? If yes (or if it's a relative referring back to one) → quod. If it's standing alone asking or naming a thing → quid.
In Caesar's iter in ea loca facere coepit, quibus in locīs esse Germānōs audiēbat (B. G. iv. 7), why is quibus ablative plural?
Study Tips
- •Drill quī, cuius, cuī, quem, quō — singular masculine — as your anchor. Once that lives in your fingers, quae (fem. and neut. pl.), quod (neut. sg.), and quibus (dat./abl. pl.) fall into place.
- •Learn the relative paradigm and the interrogative adjective in the SAME column — they're identical. The only split is the substantive interrogative: nom. masc. quis (not quī) and neut. quid (not quod).
- •When you see quī, quae, quid, quod right after sī, nisi, num, nē, suspect indefinite first: "if anyone," "unless any," "lest any." Aliquis loses its ali- after sī, leaving the bare stem to do the work.
- •Quantus ("how big"), quālis ("of what kind"), quot (indeclinable — "how many") behave like first/second declension adjectives or stay frozen. They follow the same pattern: interrogative in a question, relative in a statement, paired with tantus / tālis / tot in correlation.