noun, feminineplural: verdades de perogrullo
truism
From a medieval folkloric character named Pedro Grullo, also written as Pedrogrullo, Pero Grullo or Perogrullo. The exact origin of the character is unknown.
truism
From a medieval folkloric character named Pedro Grullo, also written as Pedrogrullo, Pero Grullo or Perogrullo. The exact origin of the character is unknown.