hayan oscurecido
-they/you have darkened
Present perfect subjunctiveellos/ellas/ustedesconjugation ofoscurecer.

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
to faint