Usage: 3 forms in 3 verses
Form Translated As     In Verse(s)
ημαυρώθησαν darkened LXX.Deut.34.7
αμαυρωθήσεται shall be darkened LXX.Lam.4.1
αμαυρούσθαι to be darkened LXX.1Sam.3.2

Liddell-Scott-Jones

ἀμαυρόω (amauroō) to darken G:V

ἀμαυρόω-όω,

[Refs 6th c.BC+], see.below: future -ώσω[Refs 4th c.BC+]: aorist ἀμαύρωσα[Refs 5th c.BC+]: perfect ἠμαύρωκα[Refs 1st c.BC+]:—middle, aorist optative ἀμαυρόωώσαιτο[Refs 5th c.AD+]:—passive, [Refs 5th c.BC+]: perfect ἠμαύρωμαι[Refs 1st c.AD+]aorist ἀμαυρόωώθην (without augment) [Refs 5th c.BC+]:—make dim, faint, or obscure, σελήνη . τὰ ἴχνη[Refs 5th c.BC+]:—passive, become dark or dim, ἥλιος ἀμαυρόωώθη Hdt.[same place]; ὄμμα-ούμενον[ἀμαυρόωωθείη ">Refs 5th c.BC+]perished utterly, [Refs 8th c.BC+]

__2 render invisible, PMag. Berol.[Refs]
__3 blind, ὄμματα[Refs 2nd c.AD+]
__II metaphorically in same sense, εὐνομία.. ὕβριν .[ἀμαυρόωώσει χρόνος 4th-5th c.BC: Simonides Lyricus 4.5, compare 3rd c.BC: Callimachus Epicus “Iambi” 1.429; χρόνος δ᾽ ἀμαυρόωοῖ πάντα 5th c.BC: Sophocles Tragicus “Fragmenta” 954, compare 1st c.BC-1st c.AD: Strabo Geographus [same place]; τίς ἄρα σὰν.. ἀμαυρόωοῖ ζόα; 5th c.BC: Euripides Tragicus “Hippolytus” 816; πολλοί γε.. τῷ θράσει τὰς συμφορὰς ζητοῦσ᾽ ἀμαυρόωοῦν [prev. author] “fragment” 416; ἀ. δόξαν 2nd c.BC: Polybius Historicus 20.4.3; τὰς ἄλλας κακίας 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Crassus” 2; οἶκον -ώσας ὤλετο “IG” 12(7).107 (from Amorgos)">Refs 6th c.BC+]; deface a tomb, [Refs]:—weaken, impair, πόνος πόνον .[Refs 5th c.BC+]:—passive, [Refs 4th c.BC+]; ἠμαυρωμένος τὸ ἀξίωμα, τῇ δόξῃ, [Refs 1st c.AD+]; to be dazzled, περὶ τὸν χρυσόν[Refs 1st c.AD+]