Imperfect Passive Indicative | Latin Grammar

The imperfect passive indicative presents a subject as undergoing an action in the past while that action is in progress, repeated, or setting the scene. Porta claudēbātur can mean “the gate was being closed,” “the gate used to be closed,” or, in the right context, “they were trying to close the gate.” Latin places all of that information in the single finite form claudēbātur.

This tense belongs to the present system. Build it from the present stem, not from the perfect active stem or the fourth principal part. Its form is especially transparent: the imperfect marker contains -bā-, and passive personal endings tell you that the grammatical subject receives the action. The English translation is chosen only after those Latin facts have been identified.

The formation: present stem + imperfect marker + passive ending

The passive personal endings are -r, -ris (or -re), -tur, -mur, -minī, and -ntur. In first- and second-conjugation verbs, they follow -bā-; in third-conjugation, third-iō, and fourth-conjugation verbs, the characteristic sequence is -ēbā- or -iēbā-.

Person	1st laudō	2nd moneō	3rd regō	3rd-iō capiō	4th audiō
1st singular	laudābar	monēbar	regēbar	capiēbar	audiēbar
2nd singular	laudābāris	monēbāris	regēbāris	capiēbāris	audiēbāris
3rd singular	laudābātur	monēbātur	regēbātur	capiēbātur	audiēbātur
1st plural	laudābāmur	monēbāmur	regēbāmur	capiēbāmur	audiēbāmur
2nd plural	laudābāminī	monēbāminī	regēbāminī	capiēbāminī	audiēbāminī
3rd plural	laudābantur	monēbantur	regēbantur	capiēbantur	audiēbantur

The second-person singular may end in -bāre instead of -bāris: laudābāre “you were being praised.” This alternative is (neutral Classical), though -ris is usually easier for learners to recognize. First-conjugation laudā-bā-r and second-conjugation monē-bā-r show the components clearly. Third-conjugation regēbar has -ēbā-; third-iō and fourth conjugation add i: capiēbar, audiēbar.

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Read from the right edge. In capiēbantur, -ntur says “third-person plural passive,” -bā- says “imperfect,” and capiē- points to capiō, capere. The result is “they were being captured,” not a form guessed from English.

What the imperfect contributes

The imperfect does not simply mean “past.” It presents a past situation from inside, without packaging its endpoint as the main event. With a passive subject, that produces several related readings.

An action in progress

Cum ad portam vēnī, carrus onerābātur.

When I came to the gate, the wagon was being loaded.

The arrival is a bounded event; the loading is the activity already under way. English “was being loaded” expresses this progressive reading naturally.

Dum prandium coquēbātur, hospitēs sub arbore colloquēbantur.

While lunch was being cooked, the guests were talking under a tree.

Here dum and the surrounding imperfect create a background scene. The passive does not identify the cook because the prepared meal, not its agent, is the current topic.

Repeated or customary action

Portae cotīdiē prīmā lūce aperiēbantur.

The gates used to be opened every day at first light.

In lūdō versūs saepe recitābantur atque explicābantur.

At school verses were often recited and explained.

Words such as cotīdiē and saepe favor habitual English “used to be” or a simple “were regularly.” There is no separate Latin habitual ending: context draws that value from the imperfect viewpoint.

Attempt, preparation, or interrupted process

Pōns ab hostibus dēlēbātur, sed mīlitēs eōs pepulērunt.

The bridge was being destroyed by the enemy, but the soldiers drove them back.

The sentence does not say that the bridge was successfully destroyed. The imperfect shows the process in progress; the following clause may imply interruption. This is often called the conative or attempted imperfect, but the attempt is a contextual inference, not a special conjugation.

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Do not add completion that the imperfect does not assert. Urbs oppugnābātur says that the city was under attack; urbs oppugnāta est presents the attack as a completed event. Whether the attackers ultimately succeeded must come from the context.

Active and passive keep the same viewpoint

Changing voice changes which participant becomes the grammatical subject; it does not change the imperfect viewpoint.

Servī iānuam claudēbant.

The enslaved workers were closing the door.

Iānua ā servīs claudēbātur.

The door was being closed by the enslaved workers.

Active claudēbant makes servī the nominative actors and iānuam the accusative object. Passive claudēbātur promotes the receiver to nominative iānua and optionally expresses the personal agent as ā servīs. The tense and aspect remain imperfect in both clauses.

An inanimate instrument normally appears in the ablative without ā or ab:

Litterae calamō scrībēbantur, nōn stilō.

The letters were being written with a reed pen, not with a stylus.

The morphological voice therefore cannot be read from an English “by” alone. The passive ending proves the voice; cases identify the participants.

A reliable parsing diagnostic

For nōmina vestra in tabulā scrībēbantur, proceed in this order:

-ntur marks third-person plural passive.
-bā- marks imperfect indicative.
scrībē- belongs to the present system of scrībō, scrībere.
Neuter plural nōmina is the nominative subject and agrees with the plural verb.
Only then choose “your names were being written” or, in a customary context, “used to be written.”

Nōmina vestra in tabulā scrībēbantur.

Your names were being written on the board.

This routine matters because English may use “was,” “were,” “used to,” or “kept being” where Latin uses the same imperfect form. A tense label is not a one-to-one translation.

Lexical limits and apparent exceptions

The pattern is productive across regular present stems, but not every passive-looking verb has passive meaning. Deponents such as loquor use passive morphology with active meaning: loquēbar means “I was speaking,” not “I was being spoken.” Their principal parts label the lexical exception.

The present-system passive of faciō is supplied by fīō: domus fīēbat “the house was being made / was coming into being,” not faciēbātur in the ordinary passive sense. Intransitive verbs cannot normally form a personal passive because there is no accusative object to promote, but they can appear impersonally in the third-person singular: pugnābātur “there was fighting.” These patterns have dedicated pages in Personal Passive Constructions and Impersonal Passive Constructions.

The imperfect passive is (neutral Classical) in prose and verse. Poets may separate agents, subjects, and verbs dramatically, and the -re second-person ending is especially convenient metrically, but those are word-order or variant-ending choices, not a different tense. Later Latin continues the synthetic imperfect passive, although Romance languages eventually replace much of the inherited system with new periphrases.

Common Mistakes

1. Building the form from the fourth principal part

❌ Epistula scrīpta erat dum intrāvī.

Wrong for ‘the letter was being written’ — scrīpta erat is pluperfect passive and presents prior completion.

✅ Epistula scrībēbātur dum intrāvī.

The letter was being written when I entered.

Use the present stem scrīb- for the imperfect; the participle scrīpta belongs to the perfect system.

2. Copying the active ending

❌ Portae claudēbant ad noctem.

Incorrect for ‘the gates were being closed’ — claudēbant is active and needs an acting plural subject.

✅ Portae claudēbantur ad noctem.

The gates were being closed toward nightfall.

The passive third-person plural ends in -bantur, not active -bant.

3. Using the imperfect for a completed event

❌ Urbs herī capiēbātur.

Wrong for the intended completed report ‘the city was captured yesterday’ — the imperfect presents the capture in progress.

✅ Urbs herī capta est.

The city was captured yesterday.

English “was captured” does not automatically call for the Latin imperfect. Use the perfect when the event is presented as a completed whole.

4. Leaving the receiver in the accusative

❌ Portam ā servīs claudēbātur.

Incorrect — portam is accusative, but a personal passive requires its receiver as nominative subject.

✅ Porta ā servīs claudēbātur.

The gate was being closed by the enslaved workers.

5. Translating a deponent as a true passive

❌ Loquēbar ā frātre.

Incorrect for ‘I was speaking with my brother’ — loquor is deponent, not a personal passive.

✅ Cum frātre loquēbar.

I was speaking with my brother.

Key Takeaways

Form the imperfect passive indicative from the present system: the imperfect sequence plus -r, -ris/-re, -tur, -mur, -minī, or -ntur. Its subject receives an action viewed as ongoing, repeated, backgrounded, or attempted in past time. Identify ending, tense marker, stem, and case roles before translating; English wording follows context rather than supplying the Latin form.

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