unanswered

adj

1. (not-comparable)That has not been answered or addressed.

   “The flashing light on the answering machine bore testimony to the unanswered call.”

   “The timing of the incident raised the question, almost certainly destined to remain unanswered, of whether, having allowed the escapers to pass by unhindered, the culprit had waited specifically for the yellow jersey group before sowing his mischief.”

   “The Helong city government said a 55-year-old man surnamed Zhao, his 26-year-old daughter and another man aged 67 were killed Saturday. It said in a statement that police from the provincial to the local levels were investigating.[…] Calls to Helong city and Yanbian prefecture government spokesmen rang unanswered on Thursday.”