The Latin second conjugation has a stem ending in ē. The infinitive ends in -ēre. They descend from either Proto-Italic *-eō or *-ēō, from Proto-Indo-European *-éyeti or *-éh₁yeti.
Active Indicative
Present
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
moneō | I warn | monēmus | We warn |
| 2nd |
monēs | You warn | monētis | You (pl.) warn |
| 3rd |
monet | He/she/it warns | monent | They warn |
Imperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monēbam | I was warning | monēbāmus | We were warning |
| 2nd |
monēbās | You were warning | monēbātis | You (pl.) were warning |
| 3rd |
monēbat | He/she/it was warning | monēbant | They were warning |
Future
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monēbō | I will warn | monēbimus | We will warn |
| 2nd |
monēbis | You will warn | monēbitis | You (pl.) will warn |
| 3rd |
monēbit | He/she/it will warn | monēbunt | They will warn |
Perfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monuī | I have warned | monuimus | We have warned |
| 2nd |
monuistī | You have warned | monuistis | You (pl.) have warned |
| 3rd |
monuit | He/she/it has warned | monuērunt | They have warned |
Pluperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monueram | I had warned | monuerāmus | We had warned |
| 2nd |
monuerās | You had warned | monuerātis | You (pl.) had warned |
| 3rd |
monuerat | He/she/it had warned | monuerant | They had warned |
Future Perfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monuerō | I shall have warned | monuerimus | We shall have warned |
| 2nd |
monueris | You will have warned | monueritis | You (pl.) will have warned |
| 3rd |
monuerit | He/she/it will have warned | monuerint | They will have warned |
Passive Indicative
Present
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
moneor | I am warned | monēmur | We are warned |
| 2nd |
monēris | You are warned | monēminī | You (pl.) are warned |
| 3rd |
monētur | He/she/it is warned | monentur | They are warned |
Imperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monēbar | I was warned | monēbāmur | We were warned |
| 2nd |
monēbāris | You were warned | monēbāminī | You (pl.) were warned |
| 3rd |
monēbātur | He/she/it was warned | monēbantur | They were warned |
Future
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monēbor | I will be warned | monēbimur | We will be warned |
| 2nd |
monēberis | You will be warned | monēbiminī | You (pl.) will be warned |
| 3rd |
monēbitur | He/she/it will be warned | monēbuntur | They will be warned |
Perfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monitus sum | I have been warned | moniti sumus | We have been warned |
| 2nd |
monitus es | You have been warned | moniti estis | You (pl.) have been warned |
| 3rd |
monitus est | He/she/it has been warned | moniti sunt | They have been warned |
Note: The participle is inflected for gender and number like a first- and second-declension adjective.
Pluperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monitus eram | I had been warned | moniti eramus | We had been warned |
| 2nd |
monitus eras | You had been warned | moniti eratis | You (pl.) had been warned |
| 3rd |
monitus erat | He/she/it had been warned | moniti erant | They had been warned |
Note: The participle is inflected for gender and number like a first- and second-declension adjective.
Future perfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monitus erō | I will have been warned | moniti erimus | We will have been warned |
| 2nd |
monitus eris | You will have been warned | moniti eritis | You (pl.) will have been warned |
| 3rd |
monitus erit | He/she/it will have been warned | moniti erunt | They will have been warned |
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 |
moneam | I may warn | moneāmus | We may warn |
| 2nd |
moneās | You may warn | moneātis | You (pl.) may warn |
| 3rd |
moneat | He/she/it may warn | moneant | They may warn |
Imperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monērem | I should warn | monērēmus | We should warn |
| 2nd |
monērēs | You would warn | monērētis | You (pl.) would warn |
| 3rd |
monēret | He/she/it would warn | monērent | They would warn |
Perfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monuerim | I may have warned | monuerīmus | We may have warned |
| 2nd |
monuerīs | You may have warned | monuerītis | You (pl.) may have warned |
| 3rd |
monuerit | He/she/it may have warned | monuerint | They may have warned |
Pluperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monuissem | I should have warned | monuissēmus | We should have warned |
| 2nd |
monuissēs | You would have warned | monuissētis | You (pl.) would have warned |
| 3rd |
monuisset | He/she/it would have warned | monuissent | They would have warned |
Passive subjunctive
Present
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monear | I may be warned | moneāmur | We may be warned |
| 2nd |
moneāris | You may be warned | moneāminī | You (pl.) may be warned |
| 3rd |
moneātur | He/she/it may be warned | moneantur | They may be warned |
Imperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monērer | I should be warned | monērēmur | We should be warned |
| 2nd |
monērēris | You would be warned | monērēminī | You (pl.) would be warned |
| 3rd |
monērētur | He/she/it would be warned | monērentur | They would be warned |
Perfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monitus sim | I may have been warned | monitī sīmus | We may have been warned |
| 2nd |
monitus sīs | You may have been warned | monitī sītis | You (pl.) may have been warned |
| 3rd |
monitus sit | He/she/it may have been warned | monitī sint | They may have been warned |
Note: The participle is inflected for gender and number like a first- and second-declension adjective.
Pluperfect
| Person | Singular | Meaning | Plural | Meaning |
| 1st |
monitus essem | I should have been warned | monitī essēmus | We should have been warned |
| 2nd |
monitus essēs | You would have been warned | monitī essētis | You (pl.) would have been warned |
| 3rd |
monitus esset | He/she/it would have been warned | monitī essent | They would have been warned |
Note: The participle is inflected for gender and number like a first- and second-declension adjective.
Imperative
Active
Monē! (sing.) Warn!
Monēte! (pl.) Warn!
Passive
Monēre! (sing.) Be warned!
Monēminī! (pl.) Be warned!
Gerunds
Nom. - monēre
Gen. - monendī
Dat. - monendō
Acc. - monendum
Abl. - monendō
Infinitives and Participles
Act. Pres. Inf. - Monēre
Pass. Pres. Inf. - Monērī
Act. Perf. Inf. - Monuisse
Pass. Perf. Inf. - Monitus esse
Act. Fut. Inf. - Monitūrus esse
Pass. Fut. Inf. - Monitum īrī
Act. Pres. Part. - Monēns
Pass. Perf. Part. - Monitus
Act. Fut. Part. - Monitūrus
Pass. Fut. Part. - Monendus