Appendix:Latin fourth conjugation

The Latin fourth conjugation has an infinitive ending in -īre. The stem ends in an "i". They descend from Proto-Italic *-jō, from Proto-Indo-European *-yeti.

Example

audiō, audīre, audīvī, audītus — to hear

Active indicative

Present

Person	Singular	Meaning	Plural	Meaning
1st	audiō	I hear	audīmus	We hear
2nd	audīs	You hear	audītis	You (pl.) hear
3rd	audit	He/she/it hears	audiunt	They hear

Imperfect

Person	Singular	Meaning	Plural	Meaning
1st	audiēbam	I was hearing	audiēbāmus	We were hearing
2nd	audiēbās	You were hearing	audiēbātis	You (pl.) were hearing
3rd	audiēbat	He/she/it was hearing	audiēbant	They were hearing

Future

Person	Singular	Meaning	Plural	Meaning
1st	audiam	I will hear	audiēmus	We will hear
2nd	audiēs	You will hear	audiētis	You (pl.) will hear
3rd	audiet	He/she/it will hear	audient	They will hear

Perfect

Person	Singular	Meaning	Plural	Meaning
1st	audīvī	I have heard	audīvimus	We have heard
2nd	audīvistī	You have heard	audīvistis	You (pl.) have heard
3rd	audīvit	He/she/it has heard	audīvērunt	They have heard

Pluperfect

Person	Singular	Meaning	Plural	Meaning
1st	audīveram	I had heard	audīverāmus	We had heard
2nd	audīverās	You had heard	audīverātis	You (pl.) had heard
3rd	audīverat	He/she/it had heard	audīverant	They had heard

Future perfect

Person	Singular	Meaning	Plural	Meaning
1st	audīverō	I will have heard	audīverimus	We will have heard
2nd	audīveris	You will have heard	audīveritis	You (pl.) will have heard
3rd	audīverit	He/she/it will have heard	audīverint	They will have heard

Passive indicative

Present

Person	Singular	Meaning	Plural	Meaning
1st	audior	I am heard	audīmur	We are heard
2nd	audīris	You are heard	audīminī	You (pl.) are heard
3rd	audītur	He/she/it is heard	audiuntur	They are heard

Imperfect

Person	Singular	Meaning	Plural	Meaning
1st	audiēbar	I was heard	audiēbāmur	We were heard
2nd	audiēbāris	You were heard	audiēbāmini	You (pl.) were heard
3rd	audiēbātur	He/she/it was heard	audiēbantur	They were heard

Future

Person	Singular	Meaning	Plural	Meaning
1st	audiar	I will be heard	audiēmur	We will be heard
2nd	audiēris	You will be heard	audiēminī	You (pl.) will be heard
3rd	audiētur	He/she/it will be heard	audientur	They will be heard

Perfect

Person	Singular	Meaning	Plural	Meaning
1st	audītus sum	I have been heard	audītī sumus	We have been heard
2nd	audītus es	You have been heard	audītī estis	You (pl.) have been heard
3rd	audītus est	He/she/it has been heard	audītī sunt	They have been heard

Note: The participle is inflected for gender and number like a first- and second-declension adjective.

Pluperfect

Person	Singular	Meaning	Plural	Meaning
1st	audītus eram	I had been heard	audītī erāmus	We had been heard
2nd	audītus erās	You had been heard	audītī erātis	You (pl.) had been heard
3rd	audītus erat	He/she/it had been heard	audītī erant	They had been heard

Note: The participle is inflected for gender and number like a first- and second-declension adjective.

Future perfect

Person	Singular	Meaning	Plural	Meaning
1st	audītus erō	I will have been heard	audītī erimus	We will have been heard
2nd	audītus eris	You will have been heard	audītī eritis	You (pl.) will have been heard
3rd	audītus erit	He/she/it will have been heard	audītī erunt	They will have been heard

Note: The participle is inflected for gender and number like a first- and second-declension adjective.

Active subjunctive

Present

Person	Singular	Meaning	Plural	Meaning
1st	audiam	I may hear	audiāmus	We may hear
2nd	audiās	You may hear	audiātis	You (pl.) may hear
3rd	audiat	He/she/it may hear	audiant	They may hear

Imperfect

Person	Singular	Meaning	Plural	Meaning
1st	audīrem	I should hear	audīrēmus	We should hear
2nd	audīrēs	You would hear	audīrētis	You (pl.) would hear
3rd	audīret	He/she/it would hear	audīrent	They would hear

Perfect

Person	Singular	Meaning	Plural	Meaning
1st	audīverim	I may have heard	audīverīmus	We may have heard
2nd	audīverīs	You may have heard	audīverītis	You (pl.) may have heard
3rd	audīverit	He/she/it may have heard	audīverint	They may have heard

Pluperfect

Person	Singular	Meaning	Plural	Meaning
1st	audīvissem	I should have heard	audīvissēmus	We should have heard
2nd	audīvissēs	You would have heard	audīvissētis	You (pl.) would have heard
3rd	audīvisset	He/she/it would have heard	audīvissent	They would have heard

Passive subjunctive

Present

Person	Singular	Meaning	Plural	Meaning
1st	audiar	I may be heard	audiāmur	We may be heard
2nd	audiāris	You may be heard	audiāminī	You (pl.) may be heard
3rd	audiātur	He/she/it may be heard	audiantur	They may be heard

Imperfect

Person	Singular	Meaning	Plural	Meaning
1st	audīrer	I should be heard	audīrēmur	We should be heard
2nd	audīrēris	You would be heard	audīrēminī	You (pl.) would be heard
3rd	audīrētur	He/she/it would be heard	audīrentur	They would be heard

Perfect

Person	Singular	Meaning	Plural	Meaning
1st	audītus sim	I may have been heard	audītī sīmus	We may have been heard
2nd	audītus sīs	You may have been heard	audītī sītis	You (pl.) may have been heard
3rd	audītus sit	He/she/it may have been heard	audītī sint	They may have been heard

Note: The participle is inflected for gender and number like a first- and second-declension adjective.

Pluperfect

Person	Singular	Meaning	Plural	Meaning
1st	audītus essem	I should have been heard	audītī essēmus	We should have been heard
2nd	audītus essēs	You would have been heard	audītī essētis	You (pl.) would have been heard
3rd	audītus esset	He/she/it would have been heard	audītī essent	They would have been heard

Note: The participle is inflected for gender and number like a first- and second-declension adjective.

Imperative

Active
Audī! (sing.) Hear!
Audīte! (pl.) Hear!

Passive
Audire! (sing.) Be heard!
Audimini! (pl.) Be heard!

Infinitives and participles

Present active infinitive	audīre
Perfect active infinitive	audīvisse
Future active infinitive	audītūrus esse
Present passive infinitive	audīrī
Perfect passive infinitive	audītus esse
Future passive infinitive	audītum īrī
Present active participle	audiēns
Future active participle	audītūrus
Perfect passive participle	audītus
Future passive participle	audiendus

Related topics

• Appendix:Latin first conjugation
• Appendix:Latin second conjugation
• Appendix:Latin third conjugation
• Appendix: Latin irregular verbs