ἄδηλ-ος, ον,
unseen, invisible, of a fish, ποιεῖν ἑαυτὸν ἄ.[[ 4th c.BC: Aristoteles Philosophus “Historia Animalium” 620b31] Refs 4th c.BC+]; ἄ. χιτών, of the hyaloid membrane of the eye, [[[ 2nd c.AD: Galenus Medicus]14.712] Refs 2nd c.AD+]; unknown, obscure, [[ 8th-7th c.BC: Hesiodus Epicus “Opera et Dies” 6; τὸν ἄ. ἄνδρα.. ἰχνεύειν 5th c.BC: Sophocles Tragicus “Oedipus Tyrannus” 475] Refs 8th c.BC+]; ἐὰν δὲ.. ἄ. ὁ κτείνας ᾖ [[Pl “Lg.” 874a ] Refs]; of troops, ἄ. τοῖς πολεμίοις[[ 5th-6th c.BC: Xenophon Historicus “Institutio Cyri (Cyropaedia)” 6.3.13; εἰς τὸ ἄ. ἀποκρύπτειν [prev. author] “Eq.Mag.” 5.7. ] Refs 5th c.BC+]
__II mostly of things, ἄ. θάνατοι death by an unknown hand, [[ 5th c.BC: Sophocles Tragicus “Oedipus Tyrannus” 496] Refs 5th c.BC+]; ἄ. ἔχθρα secret enmity, [[ 5th c.BC: Thucydides Historicus 8.108] Refs 5th c.BC+]; ῥεῖ πᾶν ἄδηλον melts all to nothing, [[ 5th c.BC: Sophocles Tragicus “Trachiniae” 698] Refs 5th c.BC+]; inscrutable, [[ 5th c.BC: Euripides Tragicus “Orestes” 1318. ] Refs 5th c.BC+]
__II.b neuter, ἄδηλόν [ἐστι] εἰ.. it is uncertain whether.., [[ 5th-6th c.BC: Plato Philosophus “Phaedrus” 232e, +others] Refs 5th c.BC+]; ἄ. μή.. [[ [prev. author] “Phd.” 91d: _absolutely_, ἄ. ὄν 5th c.BC: Thucydides Historicus 1.2; ἐν ἀδήλῳ εἶναι 5th c.BC: Antipho Orator 5.6; ἐν ἀδηλοτέρῳ εἶναι 5th-6th c.BC: Xenophon Historicus “Historia Graeca (Hellenica)” 7.5.8; ἐξ ἀδήλου ἔρχεται [σελήνη] 5th c.BC: Sophocles Tragicus “Fragmenta” 871.5] Refs 5th c.BC+]; also ἄ. agreeing with the subject (like δίκαιός εἰμι), παῖδες ἄ. ὁποτέρων, ={ἄδηλον ὁποτέρων παῖδές εἰσιν}, [[ 5th c.BC: Lysias Orator 1.33] Refs 5th c.BC+]; ἀδήλοις.. πῶς ἀποβήσεται, ={ἃ ἄ. ἐστι πῶς ἀ}., [[ 4th c.BC: Aristoteles Philosophus “Ethica Nicomachea” 1112b9, compare 5th-6th c.BC: Xenophon Historicus “Memorabilia” 1.1.6. ] Refs 5th c.BC+]