Answer: obviate

AnswerCrossword Clue
OBVIATEMake moot
OBVIATEMake unnecessary
OBVIATERender unnecessary
OBVIATEMake unnecessary.
OBVIATEPreclude
OBVIATEPrevent
obviateto anticipate and prevent (as a situation) or make unnecessary (as an action)
obviateto make unnecessary
obviateto forestall
obviateto anticipate and prevent or eliminate difficulties, disadvantages, etc., by effective measures.