ἐπίσταμαι (epistamai): all forms
ἐπίσταμαι means “know, understand, know how to”. Below is its full conjugation in Ancient Greek.
Present middle/passive
Present middle/passive | Indicative | Subjunctive | Optative | Imperative |
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| 1st singular | ἐπίσταμαι | ἐπίστωμαι | ἐπισταίμην | |
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| 2nd singular | ἐπίστασαι · ἐπίστᾳ | ἐπίστῃ | ἐπίσταιο | ἐπίστω · ἐπίστασο |
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| 3rd singular | ἐπίσταται | ἐπίστηται | ἐπίσταιτο | ἐπιστάσθω |
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| 1st plural | ἐπιστάμεθα | ἐπιστώμεθα | ἐπισταίμεθα | |
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| 2nd plural | ἐπίστασθε | ἐπίστησθε | ἐπίσταισθε | ἐπίστασθε |
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| 3rd plural | ἐπίστανται | ἐπίστωνται | ἐπίσταιντο | ἐπιστάσθων |
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Imperfect middle/passive
Imperfect middle/passive | Indicative |
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| 1st singular | ἠπιστάμην |
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| 2nd singular | ἠπίστασο · ἠπίστω |
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| 3rd singular | ἠπίστατο |
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| 1st plural | ἠπιστάμεθα |
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| 2nd plural | ἠπίστασθε |
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| 3rd plural | ἠπίσταντο |
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Future middle
Future middle | Indicative | Optative |
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| 1st singular | ἐπιστήσομαι | ἐπιστησοίμην |
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| 2nd singular | ἐπιστήσῃ · ἐπιστήσει | ἐπιστήσοιο |
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| 3rd singular | ἐπιστήσεται | ἐπιστήσοιτο |
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| 1st plural | ἐπιστησόμεθα | ἐπιστησοίμεθα |
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| 2nd plural | ἐπιστήσεσθε | ἐπιστήσοισθε |
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| 3rd plural | ἐπιστήσονται | ἐπιστήσοιντο |
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Future passive
Future passive | Indicative | Optative |
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| 1st singular | ἐπιστηθήσομαι | ἐπιστηθησοίμην |
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| 2nd singular | ἐπιστηθήσει · ἐπιστηθήσῃ | ἐπιστηθήσοιο |
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| 3rd singular | ἐπιστηθήσεται | ἐπιστηθήσοιτο |
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| 1st plural | ἐπιστηθησόμεθα | ἐπιστηθησοίμεθα |
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| 2nd plural | ἐπιστηθήσεσθε | ἐπιστηθήσοισθε |
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| 3rd plural | ἐπιστηθήσονται | ἐπιστηθήσοιντο |
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Aorist passive
Aorist passive | Indicative | Subjunctive | Optative | Imperative |
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| 1st singular | ἠπιστήθην | ἐπιστηθῶ | ἐπιστηθείην | |
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| 2nd singular | ἠπιστήθης | ἐπιστηθῇς | ἐπιστηθείης | ἐπιστήθητι |
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| 3rd singular | ἠπιστήθη | ἐπιστηθῇ | ἐπιστηθείη | ἐπιστηθήτω |
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| 1st plural | ἠπιστήθημεν | ἐπιστηθῶμεν | ἐπιστηθείημεν · ἐπιστηθεῖμεν | |
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| 2nd plural | ἠπιστήθητε | ἐπιστηθῆτε | ἐπιστηθείητε · ἐπιστηθεῖτε | ἐπιστήθησθε |
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| 3rd plural | ἠπιστήθησαν | ἐπιστηθῶσι(ν) | ἐπιστηθείησαν · ἐπιστηθεῖεν | ἐπιστηθέσθων · ἐπιστηθήτωσαν |
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Infinitives
Infinitives | Middle | Passive | Middle/passive |
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| Present | | | ἐπίστασθαι |
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| Future | ἐπιστήσεσθαι | ἐπιστηθήσεσθαι | |
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| Aorist | | ἐπιστηθῆναι | |
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Participles
Present middle/passive participle, singular | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστάμενος | ἐπισταμένη | ἐπιστάμενον |
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| Genitive | ἐπισταμένου | ἐπισταμένης | ἐπισταμένου |
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| Dative | ἐπισταμένῳ | ἐπισταμένῃ | ἐπισταμένῳ |
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| Accusative | ἐπιστάμενον | ἐπισταμένην | ἐπιστάμενον |
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| Vocative | ἐπιστάμενε | ἐπισταμένη | ἐπιστάμενον |
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Present middle/passive participle, plural | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστάμενοι | ἐπιστάμεναι | ἐπιστάμενα |
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| Genitive | ἐπισταμένων | ἐπισταμένων | ἐπισταμένων |
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| Dative | ἐπισταμένοις | ἐπισταμέναις | ἐπισταμένοις |
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| Accusative | ἐπισταμένους | ἐπισταμένας | ἐπιστάμενα |
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| Vocative | ἐπιστάμενοι | ἐπιστάμεναι | ἐπιστάμενα |
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Future middle participle, singular | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστησόμενος | ἐπιστησομένη | ἐπιστησόμενον |
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| Genitive | ἐπιστησομένου | ἐπιστησομένης | ἐπιστησομένου |
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| Dative | ἐπιστησομένῳ | ἐπιστησομένῃ | ἐπιστησομένῳ |
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| Accusative | ἐπιστησόμενον | ἐπιστησομένην | ἐπιστησόμενον |
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| Vocative | ἐπιστησόμενε | ἐπιστησομένη | ἐπιστησόμενον |
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Future middle participle, plural | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστησόμενοι | ἐπιστησόμεναι | ἐπιστησόμενα |
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| Genitive | ἐπιστησομένων | ἐπιστησομένων | ἐπιστησομένων |
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| Dative | ἐπιστησομένοις | ἐπιστησομέναις | ἐπιστησομένοις |
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| Accusative | ἐπιστησομένους | ἐπιστησομένας | ἐπιστησόμενα |
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| Vocative | ἐπιστησόμενοι | ἐπιστησόμεναι | ἐπιστησόμενα |
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Future passive participle, singular | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστηθησόμενος | ἐπιστηθησομένη | ἐπιστηθησόμενον |
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| Genitive | ἐπιστηθησομένου | ἐπιστηθησομένης | ἐπιστηθησομένου |
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| Dative | ἐπιστηθησομένῳ | ἐπιστηθησομένῃ | ἐπιστηθησομένῳ |
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| Accusative | ἐπιστηθησόμενον | ἐπιστηθησομένην | ἐπιστηθησόμενον |
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| Vocative | ἐπιστηθησόμενε | ἐπιστηθησομένη | ἐπιστηθησόμενον |
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Future passive participle, plural | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστηθησόμενοι | ἐπιστηθησόμεναι | ἐπιστηθησόμενα |
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| Genitive | ἐπιστηθησομένων | ἐπιστηθησομένων | ἐπιστηθησομένων |
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| Dative | ἐπιστηθησομένοις | ἐπιστηθησομέναις | ἐπιστηθησομένοις |
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| Accusative | ἐπιστηθησομένους | ἐπιστηθησομένας | ἐπιστηθησόμενα |
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| Vocative | ἐπιστηθησόμενοι | ἐπιστηθησόμεναι | ἐπιστηθησόμενα |
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Aorist passive participle, singular | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστηθείς | ἐπιστηθεῖσα | ἐπιστηθέν |
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| Genitive | ἐπιστηθέντος | ἐπιστηθείσης | ἐπιστηθέντος |
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| Dative | ἐπιστηθέντι | ἐπιστηθείσῃ | ἐπιστηθέντι |
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| Accusative | ἐπιστηθέντα | ἐπιστηθεῖσαν | ἐπιστηθέν |
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| Vocative | ἐπιστηθείς | ἐπιστηθεῖσα | ἐπιστηθέν |
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Aorist passive participle, plural | Masculine | Feminine | Neuter |
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| Nominative | ἐπιστηθέντες | ἐπιστηθεῖσαι | ἐπιστηθέντα |
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| Genitive | ἐπιστηθέντων | ἐπιστηθεισῶν | ἐπιστηθέντων |
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| Dative | ἐπιστηθεῖσι(ν) | ἐπιστηθείσαις | ἐπιστηθεῖσι(ν) |
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| Accusative | ἐπιστηθέντας | ἐπιστηθείσας | ἐπιστηθέντα |
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| Vocative | ἐπιστηθέντες | ἐπιστηθεῖσαι | ἐπιστηθέντα |
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Meaning and examples of ἐπίσταμαι
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.