Liddell-Scott-Jones

ἀπαμαυρόω (apamauroō) to blur ^G:V

ἀπαμαυρόω,

remove darkness, ὄσσων.. ἀπημαύρωσας ὁμίχλην[Refs 5th c.AD+]

__II make obscure, [Refs]
__II.2 passive, fall into obscurity, become antiquated, μάθημα ἀπημαυρωμένον[Refs 2nd c.AD+]
__II.2.b passive, lose its power, of a drug, [Refs 2nd c.BC+]
__III passive, to be deprived of sight, ἀ. τοῦ βλέπειν[LXX]

_{LSJ Scripture Refs: LXX.Isa.44.18}