Eo: To Go | Latin Grammar

Eō is Latin’s basic verb “go.” Its principal parts are eō, īre, iī, itum. The fuller perfect īvī also occurs, but -īv- forms are rare in the simple verb and unusual in its compounds. The verb alternates between e-, ī-, i-/īv-, and it- rather than following the fourth conjugation mechanically.

The first diagnostic is visible form, not English meaning: eunt is present, ībant imperfect, iērunt/īvērunt perfect, and itūrī future participle. “Go” alone does not predict any of them.

Principal Parts and Stem Map

Part	Forms supplied	Recognition anchor
eō	present-system finite forms	eō, īs, eunt; ībam, ībō
īre	present infinitive; imperfect subjunctive	īre, īrem
iī (also īvī)	perfect active system	iī, īstī, ieram, ierim, īsse
itum	supine system	itum, itūrus

Indicative: Complete Active Paradigm

Tense	1st sg.	2nd sg.	3rd sg.	1st pl.	2nd pl.	3rd pl.
Present	eō	īs	it	īmus	ītis	eunt
Imperfect	ībam	ībās	ībat	ībāmus	ībātis	ībant
Future	ībō	ībis	ībit	ībimus	ībitis	ībunt
Perfect	iī	īstī	iit	iimus	īstis	iērunt
Pluperfect	ieram	ierās	ierat	ierāmus	ierātis	ierant
Future perfect	ierō	ieris	ierit	ierimus	ieritis	ierint

The table uses the shorter forms normal in Classical prose. The uncontracted series—īvī, īvistī, īveram, īverim, īvisse—makes the inherited pattern easier to see but is much less usual, especially in compounds. Both series belong to the same perfect system; contraction never changes tense, person, or mood.

Nunc ad forum eō; tū quō īs?

I am going to the forum now; where are you going?

Mercātōrēs eādem viā cotīdiē ībant.

The merchants used to go by the same road every day.

Crās ad portum ībimus.

Tomorrow we shall go to the harbor.

Herī Rōmam iī, sed amīcum nōn vīdī.

Yesterday I went to Rome, but I did not see my friend.

The present can mean “go” or “am going”; Latin does not need a separate progressive. Destination normally uses ad + accusative, but names of towns and domum take the bare accusative: Rōmam eō, domum eunt.

Subjunctive and Imperative

Tense	1st sg.	2nd sg.	3rd sg.	1st pl.	2nd pl.	3rd pl.
Present	eam	eās	eat	eāmus	eātis	eant
Imperfect	īrem	īrēs	īret	īrēmus	īrētis	īrent
Perfect	ierim	ierīs	ierit	ierīmus	ierītis	ierint
Pluperfect	īssem	īssēs	īsset	īssēmus	īssētis	īssent

Eāmus nunc domum antequam pluat.

Let us go home now before it rains.

Nesciēbam quō mīlitēs nocte īrent.

I did not know where the soldiers were going at night.

The ordinary present imperatives are ī (singular) and īte (plural). The (formal/archaic) future imperative has ītō for both second- and third-person singular, ītōte for second-person plural, and euntō for third-person plural.

Ī ad medicum; īte vōs ad portum.

Go to the doctor; you all go to the harbor.

Non-Finite Forms

Category	Form
Present infinitives	active īre; passive īrī (impersonal with simple eō)
Perfect infinitives	active īsse (also iisse; fuller īvisse); passive itum esse (impersonal)
Future infinitives	active itūrum esse; passive itum īrī (rare and impersonal with simple eō)
Present participle	iēns, genitive euntis
Future participle	itūrus, -a, -um
Gerund	eundī, eundō, eundum, eundō
Gerundive	eundus, -a, -um; normally impersonal with simple eō
Supines	itum, itū

The shifts iēns → euntis → eundī are inherited. Do not invent ientis or iendī.

Viātōrēs Rōmam euntēs prope flūmen cōnsēdērunt.

The travelers going to Rome sat down near the river.

Nōbīs nunc eundum est.

We must go now. (Literally: going must be done by us.)

Dīxit sē mox itūrum esse.

He said that he would leave soon.

The Impersonal Passive

Because simple eō is intransitive, it has no ordinary personal passive: eor cannot mean “I am gone.” Latin nevertheless uses the third-person singular passive impersonally: ītur “people go,” ībātur “people were going,” ībitur “people will go,” itum est “people went,” itum erat “people had gone,” and itum erit “people will have gone.” Subjunctives include eātur, īrētur, itum sit, and itum esset. The infinitive īrī is also the auxiliary used with another verb’s supine to form a future passive infinitive, as in lātum īrī “to be going to be carried.”

Hodiē ad castra ītur; nēmō domī manet.

They are going to the camp today; no one remains at home.

Per silvās tōtā nocte itum est.

They traveled through the woods all night. (Literally: there was a going.)

This impersonal construction is (neutral/literary Classical prose). The neuter itum never agrees with an unexpressed group of travelers.

Compounds

The compounds retain the same internal alternations: redeō, redīs, redit, redeunt; redībam; rediī; reditum. Their meanings may become lexicalized.

Verb	Principal parts	Meaning
abeō	abīre, abiī, abitum	go away
adeō	adīre, adiī, aditum	approach, undertake
exeō	exīre, exiī, exitum	go out, leave
ineō	inīre, iniī, initum	enter; undertake
intereō	interīre, interiī, interitum	perish
pereō	perīre, periī, peritum	perish, be lost
redeō	redīre, rediī, reditum	return
trānseō	trānsīre, trānsiī, trānsitum	cross, pass over

Nautae flūmen trānseunt atque portum adeunt.

The sailors cross the river and approach the harbor.

Some compounds become transitive: flūmen trānseō “cross a river,” senātōrem adeō “approach a senator.” Their passives can therefore be personal. See eō and its compounds.

Motion Syntax and Extended Meanings

The verb itself identifies the movement; surrounding cases and prepositions identify its path. Motion toward an ordinary place uses ad + accusative (ad portum it), motion away uses ā/ab, ē/ex, or *dē + ablative (ex urbe exit), and motion through commonly uses per + accusative (per silvam it). Town names, small islands, and domus use special bare place constructions: Rōmam eō, Rōmā redeō, domum eō, domō redeō.

Māne domō exiimus, per forum iimus, vesperī domum rediimus.

In the morning we left home, went through the forum, and returned home in the evening.

These phrases do not mean that eō arbitrarily governs several cases. The case belongs to the directional construction. This distinction helps with compounds: urbem adeō and flūmen trānseō have direct objects because those particular compounds are transitive, whereas ad urbem eō uses a prepositional destination.

Latin also extends “go” beyond physical travel. Rēs bene eunt means “things are going well”; nōmen perit means “the name perishes,” from compound pereō. Such meanings are lexical and must not be reverse-engineered from the nearest English verb.

Initio rēs bene ībant, sed postea omnia difficiliora facta sunt.

At first things were going well, but afterward everything became more difficult.

For production, ask three separate questions: which tense and person does the finite form express, is the verb simple or compounded, and what construction encodes source, route, or destination? Keeping those layers separate prevents a guessed English preposition from distorting the Latin form.

Common Mistakes

Regularizing the present

❌ Puerī ad magistrum īunt.

Incorrect — the third-person plural is eunt.

✅ Puerī ad magistrum eunt.

The boys are going to their teacher.

Inventing a progressive with sum

❌ Nunc sum eō ad forum.

Incorrect — Latin does not combine two finite verbs to make ‘I am going now.’

✅ Ad forum eō.

I am going to the forum.

Treating the perfect as an imperfect

❌ Herī ad forum ībam semel.

Wrong for one completed trip — ibam presents ongoing or repeated movement.

✅ Herī ad forum iī.

Yesterday I went to the forum.

Giving simple eō a personal passive

❌ Mīlitēs euntur ad castra.

Incorrect — simple eo has only an impersonal passive.

✅ Ad castra ītur.

People are going to the camp.

Key Takeaways

Memorize eō, īre, iī, itum, while recognizing the fuller Classical perfect īvī.
The present alternates e-/ī-; the imperfect and future use īb-; the perfect uses i-/īv-.
Simple eō is intransitive but has an impersonal passive.
Non-finite forms introduce eunt-, eund-, and itūr-.
Compounds preserve the morphology but may acquire transitive or idiomatic meanings.

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