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ut, nē, quī: purpose clauses

"In order to" in Latin prose is never an infinitive. It is usually ut (or nē) with the subjunctive.

LatinAdvanced Latin · The subjunctiveAbout 3 min: 1 reading, 2 practiceUpdated

After this lesson you can
  • Express purpose with ut, nē, quī and quō plus the subjunctive
  • Never use the infinitive for purpose in Latin prose
  • Translate purpose clauses naturally
Latin Level 3: constructions: lesson 2 of 14
  1. Advanced Latin · The subjunctive
  2. amem, regam, sim: the present subjunctive 4 min
  3. ut, nē, quī: purpose clauses 3 min
  4. amārem, essem: the imperfect subjunctive and the sequence of tenses 4 min
  5. amāverim, amāvissem; indirect commands 3 min
  6. possim; "I fear that …" 3 min
  7. Advanced Latin · Participles and irregular verbs
  8. amāns, amātus, amātūrus, amandus: participles 3 min
  9. volō, nōlō, mālō; the ablative absolute 4 min
  10. Advanced Latin · Clauses
  11. fīō; "so … that": result clauses 4 min
  12. "The man to lead us": clauses of characteristic 3 min
  13. cum: when, since, although 3 min
  14. Advanced Latin · Participles and irregular verbs
  15. amandī, ad urbem videndam: gerund and gerundive 4 min
  16. Advanced Latin · Clauses
  17. eō; "he said that …": indirect statement 4 min
  18. ferō; the dative with compounds; indirect questions 4 min
  19. Advanced Latin · Review
  20. The cases and the moods: a review 4 min

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Pairs with D'Ooge, Latin for Beginners (Ginn, 1909), Lesson LXII ("The Subjunctive of Purpose"), §§ 348–352

What it is

English often shows purpose with an infinitive: he sends men to find the bridge. Latin prose never does. It normally uses a clause with the subjunctive (short phrases can also use ad + gerundive or causā, in a later lesson):

WordWhen it is used, with an example
utsomething is wanted: ut domum revertantur, so that they may return home
nēsomething is not wanted: nē vulnerentur, so that they may not be wounded
quī, quae, quodpurpose linked to a noun: hominēs quī pontem reperiant, men to find the bridge
quōthe clause has a comparative: quō facilius oppidum capiant, so that they may take the town more easily
  • Caesar hominēs mittit quī pontem reperiant. → Caesar sends men to find the bridge.
  • Fugiunt nē vulnerentur. → They flee so that they may not be wounded.

Quick check

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  1. "They come to see the city."

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    Veniunt ut urbem videant.. Purpose: ut + subjunctive.

Why it matters

Every account of a campaign is full of purpose: troops are sent to do something, bridges are built so that … And it is the classic trap: the English infinitive tempts you, but Latin needs ut and the subjunctive.

Worked example

  • Lēgātus venit ut mīlitēs hortētur. → The lieutenant comes to encourage the soldiers.
  • Mīlitēs fugiunt nē capiantur. → The soldiers flee so as not to be captured.
  • Rēx nūntium mittit quī cīvēs moneat. → The king sends a messenger to warn the citizens.

Common mistake

Using ut nōn for a negative purpose: wrong: ut nōn capiantur. A negative purpose takes nē: nē capiantur, so that they may not be captured.

Key terms

ut (+ subjunctive)
in order that, so that
nē (+ subjunctive)
so that … not, lest
quī (purpose)
a relative clause of purpose: men to find
quō (+ comparative)
so that … the more
purpose clause
says why the main action is done

Practise the key terms

Tap a card to turn it over. 5 cards.

FrontBack
ut (+ subjunctive)in order that, so that
nē (+ subjunctive)so that … not, lest
quī (purpose)a relative clause of purpose: men to find
quō (+ comparative)so that … the more
purpose clausesays why the main action is done

Practice

Quick quiz

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  1. "He sends a messenger to warn the king."

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    Nūntium mittit quī rēgem moneat.. Relative clause of purpose with the subjunctive.

  2. "They flee so that they may not be seen."

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    Fugiunt nē videantur.. Negative purpose: nē.

  3. In Veniunt ut audiant, audiant is …

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    present subjunctive. Purpose clauses take the subjunctive.

Sort it

Which word introduces the purpose clause?

  1. so that they may come home

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    ut. Something wanted.

  2. so that they may not be wounded

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    nē. Something not wanted.

  3. men to find the bridge

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    quī. Purpose tied to the noun men.

  4. in order to encourage the soldiers

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    ut. Something wanted.

Practise speaking

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You are a patient Latin tutor. Use the classical pronunciation only, never the Church one: c is always k, g is always hard, v sounds like w, ae like the ai in aisle, and long vowels are held longer. Speak slowly. Use only these Latin words: ut, nē, quī, venit, veniunt, mittit, fugiunt, hortētur, moneat, videant, capiantur, lēgātus, nūntius, nūntium, mīlitēs, rēx, rēgem, urbem. Say English sentences like 'the lieutenant comes to encourage the soldiers', 'they flee so as not to be captured' or 'the king sends a messenger to warn the city', and I will say them in Latin with ut, nē or quī and the subjunctive. Do 8 sentences. After each answer, tell me what kind of mistake I made, if any, and let me try again, then tell me one thing to improve. Keep every reply under 2 sentences. If I need a name or a town, I will make one up. Speak English except for the Latin itself.

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Good to know. AI feedback on pronunciation is hit and miss, so check yourself against native recordings. This course teaches the classical pronunciation (see lesson 1); AI voices may mix it with the Church (Italian-style) one, so ask for classical and check against lesson 1. Don't share personal details: use a made-up name and town.

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In short

  • Purpose: ut / nē / quī / quō + subjunctive.
  • nē for negative purpose, never ut nōn.
  • quō when the clause has a comparative.
  • Latin prose never shows purpose with the infinitive.

Mastery check

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Check yourself

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  1. Which word introduces a negative purpose clause?

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    nē.

  2. Translate Mīlitēs mittit quī oppidum oppugnent.

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    He sends soldiers to attack the town.

  3. Why is Venit vidēre wrong for "he comes to see"?

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    Latin prose doesn't use the infinitive for purpose: venit ut videat.

Further reading

  • D'Ooge, Latin for Beginners, Lesson LXII, §§ 348–352. Public domain; Project Gutenberg.