From Proto-Italic *mentjōr, denominal verb from mēns, mentis (“mind”). The meaning "to lie" stems from a semantic shift "to be inventive, have second thoughts" > "to lie, conjure up". Compare comminīscor also from this root and again with these meanings.
mentior (present infinitive mentīrī or mentīrier, perfect active mentītus sum); fourth conjugation, deponent
Conjugation of mentior (fourth conjugation, deponent) | |||||||
---|---|---|---|---|---|---|---|
indicative | singular | plural | |||||
first | second | third | first | second | third | ||
active | present | mentior | mentīris, mentīre |
mentītur | mentīmur | mentīminī | mentiuntur |
imperfect | mentiēbar | mentiēbāris, mentiēbāre |
mentiēbātur | mentiēbāmur | mentiēbāminī | mentiēbantur | |
future | mentiar | mentiēris, mentiēre |
mentiētur | mentiēmur | mentiēminī | mentientur | |
perfect | mentītus + present active indicative of sum | ||||||
pluperfect | mentītus + imperfect active indicative of sum | ||||||
future perfect | mentītus + future active indicative of sum | ||||||
subjunctive | singular | plural | |||||
first | second | third | first | second | third | ||
active | present | mentiar | mentiāris, mentiāre |
mentiātur | mentiāmur | mentiāminī | mentiantur |
imperfect | mentīrer | mentīrēris, mentīrēre |
mentīrētur | mentīrēmur | mentīrēminī | mentīrentur | |
perfect | mentītus + present active subjunctive of sum | ||||||
pluperfect | mentītus + imperfect active subjunctive of sum | ||||||
imperative | singular | plural | |||||
first | second | third | first | second | third | ||
active | present | — | mentīre | — | — | mentīminī | — |
future | — | mentītor | mentītor | — | — | mentiuntor | |
non-finite forms | active | passive | |||||
present | perfect | future | present | perfect | future | ||
infinitives | mentīrī, mentīrier1 |
mentītum esse | mentītūrum esse | — | — | — | |
participles | mentiēns | mentītus | mentītūrus | — | — | mentiendus, mentiundus | |
verbal nouns | gerund | supine | |||||
genitive | dative | accusative | ablative | accusative | ablative | ||
mentiendī | mentiendō | mentiendum | mentiendō | mentītum | mentītū |
1The present passive infinitive in -ier is a rare poetic form which is attested.