Authors
- Obsequens, Julius
- Octavianus
- Odo of Cheriton d. 1247
- Odo Saint, Abbot of Cluny ca. 879-942
- Oechaliae halosis
- Oedipodea
- Oenomaus of Gadara 2nd cent
- Words Represented: 15
- Old Testament
- Words Represented: 516028
- Olympichus Samius v3. Jh
- Olympiodorus ca. 380-ca. 425
- Olympiodorus the Younger, of Alexandria active 6th century
- Olympus
- Olympus Historicus v1. Jh
- Onasander
- Words Represented: 12629
- Onasimus Cyprius 3./4. Jh. n. Chr
- Onomacritus
- Ophelio Comicus 4. Jh. v. Chr
- Words Represented: 36
- Opilius, Aurelius active 1st century B.C
- Words Represented: 77
- Oppian fl. 2nd cent
- Words Represented: 22910
- Oppian of Apamea
- Words Represented: 13583
- Oppius, C 1st cent. B.C
- Words Represented: 97
- Optatus Saint, Bishop of Mileve active 4th century
- Orbilius Pupillus, L. (Lucius) approximately 114 B.C.-approximately 14 B.C
- Words Represented: 21
- Orientius Saint active 430-440
- Orosius, Paulus
Top Authors by Word Count
- Cicero, Marcus Tullius
- 2386999
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- Plutarch
- 1088358
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- Aristotle
- 996134
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- Philoponus, John 6th cent
- 944525
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- Alexander of Aphrodisias
- 944464
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- Justinian I, Emperor of the East 483?-565
- 876352
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- Seneca, Lucius Annaeus ca. 4 B.C.-65 A.D
- 741262
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- Suidas (Lexicographer)
- 627192
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- Plato
- 601299
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- Quintilian
- 589281
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