Pōnō means “put,” “place,” “set down,” “establish,” or “assume.” Its principal parts are pōnō, pōnere, posuī, positum. The present retains pōn-, the perfect active uses posu-, and the supine system posit-.
The object names what is placed; a location phrase names the resulting position. Abstract objects create idioms such as spem pōnere “place hope” and lēgem pōnere “lay down a rule.”
Active Indicative and Subjunctive
| Tense | 1st sg. | 2nd sg. | 3rd sg. | 1st pl. | 2nd pl. | 3rd pl. |
|---|---|---|---|---|---|---|
| Present | pōnō | pōnis | pōnit | pōnimus | pōnitis | pōnunt |
| Imperfect | pōnēbam | pōnēbās | pōnēbat | pōnēbāmus | pōnēbātis | pōnēbant |
| Future | pōnam | pōnēs | pōnet | pōnēmus | pōnētis | pōnent |
| Perfect | posuī | posuistī | posuit | posuimus | posuistis | posuērunt / posuēre |
| Pluperfect | posueram | posuerās | posuerat | posuerāmus | posuerātis | posuerant |
| Future perfect | posuerō | posueris | posuerit | posuerimus | posueritis | posuerint |
| Subjunctive tense | 1st sg. | 2nd sg. | 3rd sg. | 1st pl. | 2nd pl. | 3rd pl. |
|---|---|---|---|---|---|---|
| Present | pōnam | pōnās | pōnat | pōnāmus | pōnātis | pōnant |
| Imperfect | pōnerem | pōnerēs | pōneret | pōnerēmus | pōnerētis | pōnerent |
| Perfect | posuerim | posuerīs | posuerit | posuerīmus | posuerītis | posuerint |
| Pluperfect | posuissem | posuissēs | posuisset | posuissēmus | posuissētis | posuissent |
Puer librum in mēnsā pōnit.
The boy puts the book on the table.
Mīlitēs prope flūmen castra pōnēbant.
The soldiers were pitching camp near the river.
Crās novum signum in forō pōnēmus.
Tomorrow we shall place a new statue in the forum.
Māter cibum ante līberōs posuit.
The mother set the food before the children.
First-person pōnam is future indicative or present subjunctive. Clause structure—not the English word “will”—settles the mood.
Passive Voice
| Tense | 1st sg. | 2nd sg. | 3rd sg. | 1st pl. | 2nd pl. | 3rd pl. |
|---|---|---|---|---|---|---|
| Present | pōnor | pōneris | pōnitur | pōnimur | pōniminī | pōnuntur |
| Imperfect | pōnēbar | pōnēbāris | pōnēbātur | pōnēbāmur | pōnēbāminī | pōnēbantur |
| Future | pōnar | pōnēris | pōnētur | pōnēmur | pōnēminī | pōnentur |
| Present subjunctive | pōnar | pōnāris | pōnātur | pōnāmur | pōnāminī | pōnantur |
| Imperfect subjunctive | pōnerer | pōnerēris | pōnerētur | pōnerēmur | pōnerēminī | pōnerentur |
Perfect passive uses positus, -a, -um plus sum: positus est, posita erat, positī erunt; positus sit, posita esset.
Cibus in mēnsā pōnitur.
The food is being placed on the table.
Statua in mediō forō posita est.
The statue was placed in the middle of the forum.
The participle agrees with the thing placed. The location remains a location phrase; it does not become an agent or object when the voice changes.
Commands and Non-Finite Forms
Present active imperatives are pōne, pōnite. The future active has pōnitō (second- or third-person singular), pōnitōte (second-person plural), and pōnuntō (third-person plural). Passive commands are pōnere, pōniminī in the present and pōnitor (second- or third-person singular), pōnuntor (third-person plural) in the future. The future and passive commands are (formal/archaic or contextually rare).
Pōne gladium et verba mea audī.
Put down the sword and listen to my words.
| Category | Active | Passive |
|---|---|---|
| Present infinitive | pōnere | pōnī |
| Perfect infinitive | posuisse | positum esse |
| Future infinitive | positūrum esse | positum īrī |
| Participles | pōnēns; positūrus | positus; pōnendus |
| Gerund | pōnendī, pōnendō, pōnendum, pōnendō | — |
| Supines | positum, positū | — |
Dīxit sē arma posuisse.
He said that he had laid down his weapons.
Fīnis huic certāminī pōnendus est.
An end must be put to this contest.
Placement and Resulting Location
With ordinary placement, Latin often describes the resulting place with in + ablative: librum in mēnsā pōnit “puts the book on the table.” English motion-oriented “onto/into” can tempt learners toward an accusative, but the verb already expresses placement and the phrase answers “where is it set?”
Nummōs in arcā, nōn in sacculō, posuī.
I put the coins in the chest, not in the bag.
When actual motion into a space is foregrounded, Latin usage can vary with viewpoint. For reliable production, use the ablative for the resulting location after ordinary pōnō and reserve accusative in for clear motion toward/into. See in with accusative or ablative.
Abstract Objects and Idioms
| Expression | Meaning |
|---|---|
| castra pōnere | pitch camp |
| arma pōnere | lay down arms |
| spem in aliquō pōnere | place hope in someone |
| fīnem pōnere + dative | put an end to |
| lēgem / condiciōnem pōnere | lay down a law/condition |
| ante oculōs pōnere | set before the eyes, make vivid |
Cīvēs omnem spem in novō duce posuērunt.
The citizens placed all their hope in the new leader.
Pāx tandem bellō fīnem posuit.
Peace finally put an end to the war.
Aspect and Maintained Position
Imperfect pōnēbat presents repeated or ongoing placement; perfect posuit marks a completed setting-down. Once the object is in position, Latin may switch to iacet, stat, or est to describe its state rather than repeat pōnō.
Servus cibum in mēnsā pōnēbat; paulō post omnia parāta erant.
The attendant was setting food on the table; a little later everything was ready.
Librum in scamno posuī; nunc ibi iacet.
I put the book on the bench; now it is lying there.
This event-state distinction helps explain why location after pōnō often uses the ablative. The verb encodes the change, while the prepositional phrase presents the position achieved.
With human objects, pōnere can mean appoint or station: custōdēs ad portam pōnere “post guards at the gate.” The people remain accusative objects, and the duty or station supplies the lexical interpretation.
Dux custōdēs ad utramque portam posuit.
The commander posted guards at each gate.
Compounds
Compounds preserve -pōnō, -posuī, -positum:
| Verb | Perfect/supine | Meaning |
|---|---|---|
| appōnō | apposuī, appositum | place beside, add, serve |
| compōnō | composuī, compositum | put together, arrange, compose |
| dēpōnō | dēposuī, dēpositum | lay down, deposit, remove |
| dispōnō | disposuī, dispositum | arrange, distribute |
| expōnō | exposuī, expositum | set out, expose, explain |
| impōnō | imposuī, impositum | place upon, impose |
| oppōnō | opposuī, oppositum | place against, oppose |
| prōpōnō | prōposuī, prōpositum | set forth, propose |
Prefixes can assimilate before p: ad- + pōnō gives appōnō, con- gives compōnō, and ob- gives oppōnō. The present compound retains -pōnō, while the perfect and supine use -posuī and -positum; the added table forms therefore belong to one predictable family.
Magister rem difficilem paucīs verbīs exposuit.
The teacher explained a difficult matter in a few words.
Impōnō commonly gives the burden or thing imposed as accusative and the person affected as dative: onus mihi impōnit “he imposes a burden on me.”
Parsing Diagnostic
Identify pōn-, posu-, or posit-. Then find the object and resulting location, or recognize an abstract collocation. With compounds, the prefix often shifts “put” into “explain,” “compose,” or “impose.”
Common Mistakes
Inventing a regular perfect
❌ Librum in mēnsā pōnuī.
Incorrect — the perfect stem is posu-.
✅ Librum in mēnsā posuī.
I put the book on the table.
Using a bare accusative for location
❌ Librum mēnsam pōnō.
Incorrect — the table cannot be a second bare accusative here.
✅ Librum in mēnsā pōnō.
I put the book on the table.
Ignoring participial agreement
❌ Statua in forō positum est.
Incorrect — positum does not agree with feminine statua.
✅ Statua in forō posita est.
The statue was placed in the forum.
Reading a compound literally
❌ Magister rem ex pōnit.
Incorrect — expōnit is one compound verb meaning ‘explains/sets out.’
✅ Magister rem expōnit.
The teacher explains the matter.
Key Takeaways
- Memorize pōnō, pōnere, posuī, positum.
- Ordinary placement commonly takes in
- ablative for the resulting location.
- Abstract objects create frequent idioms for hope, laws, conditions, and endings.
- The verb has full active, passive, and non-finite systems.
- Compounds preserve the stem changes but often develop nonliteral meanings.
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