desum: all forms
desum means “be lacking, fail (+dat.)”. Below is its full conjugation in Latin.
Present active
Present active | Indicative | Subjunctive | Imperative |
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| 1st singular | desum | desim | |
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| 2nd singular | dees | desis | dees |
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| 3rd singular | deest | desit | |
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| 1st plural | desumus | desimus | |
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| 2nd plural | deestis | desitis | deeste |
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| 3rd plural | desunt | desint | |
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Imperfect active
Imperfect active | Indicative | Subjunctive |
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| 1st singular | deeram | deessem · deforem |
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| 2nd singular | deeras | deesses · defores |
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| 3rd singular | deerat | deesset · deforet |
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| 1st plural | deeramus | deessemus · deforemus |
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| 2nd plural | deeratis | deessetis · deforetis |
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| 3rd plural | deerant | deessent · deforent |
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Future active
Future active | Indicative | Imperative |
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| 1st singular | deero | |
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| 2nd singular | deeris | deesto |
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| 3rd singular | deerit | deesto |
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| 1st plural | deerimus | |
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| 2nd plural | deeritis | deestote |
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| 3rd plural | deerunt | desunto |
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Perfect active
Perfect active | Indicative | Subjunctive |
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| 1st singular | defui | defuerim |
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| 2nd singular | defuisti | defueris |
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| 3rd singular | defuit | defuerit |
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| 1st plural | defuimus | defuerimus |
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| 2nd plural | defuistis | defueritis |
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| 3rd plural | defuerunt · defuere | defuerint |
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Pluperfect active
Pluperfect active | Indicative | Subjunctive |
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| 1st singular | defueram | defuissem |
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| 2nd singular | defueras | defuisses |
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| 3rd singular | defuerat | defuisset |
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| 1st plural | defueramus | defuissemus |
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| 2nd plural | defueratis | defuissetis |
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| 3rd plural | defuerant | defuissent |
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Future perfect active
Future perfect active | Indicative |
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| 1st singular | defuero |
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| 2nd singular | defueris |
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| 3rd singular | defuerit |
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| 1st plural | defuerimus |
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| 2nd plural | defueritis |
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| 3rd plural | defuerint |
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Infinitives
Infinitives | Active |
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| Present | deesse |
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| Future | defore |
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| Perfect | defuisse |
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Participles
Present active participle, singular | Neuter | Forms |
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| Nominative | | deens |
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| Genitive | | deentis |
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| Dative | | deenti |
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| Accusative | deens | deentem |
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| Ablative | | deente · deenti |
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| Vocative | | deens |
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Present active participle, plural | Neuter | Forms |
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| Nominative | deentia | deentes |
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| Genitive | | deentium |
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| Dative | | deentibus |
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| Accusative | deentia | deentes |
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| Ablative | | deentibus |
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| Vocative | deentia | deentes |
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Future active participle, singular | Masculine | Feminine | Neuter | Forms |
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| Nominative | defuturus | defutura | defuturum | |
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| Genitive | defuturi | defuturae | defuturi | |
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| Dative | defuturo | defuturae | defuturo | |
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| Accusative | defuturum | defuturam | defuturum | |
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| Ablative | defuturo | defutura | defuturo | |
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| Vocative | defuture | defutura | defuturum | |
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Future active participle, plural | Masculine | Feminine | Neuter | Forms |
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| Nominative | defuturi | defuturae | defutura | |
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| Genitive | defuturorum | defuturarum | defuturorum | |
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| Dative | | | | defuturis |
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| Accusative | defuturos | defuturas | defutura | |
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| Ablative | | | | defuturis |
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| Vocative | defuturi | defuturae | defutura | |
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Perfect passive participle, singular | Masculine | Feminine | Neuter | Forms |
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| Nominative | defutus | defuta | defutum | |
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| Genitive | defuti | defutae | defuti | |
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| Dative | defuto | defutae | defuto | |
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| Accusative | defutum | defutam | defutum | |
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| Ablative | defuto | defuta | defuto | |
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| Vocative | defute | defuta | defutum | |
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Perfect passive participle, plural | Masculine | Feminine | Neuter | Forms |
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| Nominative | defuti | defutae | defuta | |
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| Genitive | defutorum | defutarum | defutorum | |
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| Dative | | | | defutis |
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| Accusative | defutos | defutas | defuta | |
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| Ablative | | | | defutis |
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| Vocative | defuti | defutae | defuta | |
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Gerund, gerundive and supine
Supine | Forms |
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| Accusative | defutum |
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| Ablative | defutu |
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Meaning and examples of desum
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.