hayan oscurecido
-they/you have darkened
Present perfect subjunctive ellos/ellas/ustedes conjugation of oscurecer.

oscurecer

Los conflictos surgidos después no han anulado tal perspectiva, aunque a veces la hayan oscurecido.
The conflicts which later arose have not cancelled out that prospect, even though they have sometimes obscured it.
Word of the Day
leftovers