κᾰθαρ-εύω,
(καθαρός) to be clean or pure, [[ 5th-6th c.BC: Plato Philosophus “Phaedo” 58b, “Lg.” 759c, 1st c.BC: Philodemus Philosophus “περὶ παρρησίας” p.9O., 3rd c.AD: Porphyrius Tyrius Philosophus “de Abstinentia - Porphyrii Opuscula” 4.6 ] Refs 5th c.BC+]; of sifted grain, [[ “PPetr.” 2p.2 (3rd c.BC)] Refs 3rd c.BC+]: with genitive, to be clean or free from, φόνου [[ 5th-6th c.BC: Plato Philosophus “Epistulae” 357a ] Refs 5th c.BC+]; [κακιῶν] [[ 1st c.BC: Philodemus Gadarensis Epigrammaticus “Rh.” 1.218S.; ἁμαρτημάτων 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Cat.Mi.” 24; ὀνείδους 2nd c.AD: Lucianus Sophista “Am.” 22 ] Refs 1st c.BC+]; κ. πυρετοῦ to be free from fever, [[ 2nd c.AD: Galenus Medicus 7.503: hence ἡμέραι -εύουσαι [prev. passage]] Refs 2nd c.AD+]; κ. ἀπ᾽ αὐτοῦ (i.e. τοῦ σώματος) [[ 5th-6th c.BC: Plato Philosophus “Phaedo” 67a ] Refs 5th c.BC+]; κ. γνώμῃ to be pure or clean in mind, [[ 5th-6th c.BC: Aristophanes Comicus “Ranae” 355; περί τι 2nd c.BC: Polybius Historicus 6.56.15. ] Refs 5th c.BC+]
__2 Rhet., of a writer, to be pure, correct in language, κ. τὴν διάλεκτον [[ 1st c.BC: Dionysius Halicarnassensis “de Lysia” 2 ] Refs 1st c.BC+]; οἱ καθαρεύοντες purists, [[Hdn.Gr. 2.224. ] Refs]
__3 Grammars, to be preceded by a vowel, to be 'pure' [[compare (καθαρός 1.5b), 2nd c.AD: Apollonius Dyscolus Grammaticus “de Pronominibus;” 99.24, 4th c.AD(?): Theodosius Alexandrinus Grammaticus “Canones - Grammatici Graeci, pars” p.70H. ] Refs 2nd c.AD+]; contain a 'pure' syllable, Hdn.Gr.[[ 2.923, [prev. author] cited in 12th c.AD: Eustathius Episcopus Thessalonicensis 1859.13. ] Refs]