WordReference English-Spanish Dictionary © 2014:

Principal Translations
desconocer vtrverbo transitivo: Verbo que requiere de un objeto directo ("di la verdad", "encontré una moneda"). (no saber algo)not know adv + vtr
  (disapproving: be uninformed about)be ignorant of v exprverbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end."
  (not be aware of)be in the dark about, be unaware of, be unconscious of v exprverbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end."
  be unknown v aux + adj
 Desconocen los motivos por los que decidió cerrar el local.
 They do not know why he decided to shut down the pub.
  The girl disappeared two weeks ago, and her whereabouts are still unknown.This sentence is not a translation of the English sentence.
desconocer vtrverbo transitivo: Verbo que requiere de un objeto directo ("di la verdad", "encontré una moneda"). (no reconocer) (UK: fail to identify)not recognise adv + vtr
  (US)not recognize adv + vtr
  (fail to accept or admit)not acknowledge adv + vtr
 Desconozco al pueblo en el que crecí porque ha cambiado mucho.
 I don't recognise the village of my birth when I see what it has become.
  Is something important missing? Report an error or suggest an improvement.

'desconocer' found in these entries
In the Spanish description:
English:

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