Obviate

To remove a need, difficulty, or possible problem.

Reach for it when describing a change that removes a need or prevents a foreseeable difficulty

A covered walkway will obviate the need for rain delays.

• everyday

  avoid

  an unwanted outcome does not occur

  not when Avoiding a problem may leave its cause intact.

• everyday

  remove the need for

  maximum clarity matters more than compact style

  not when The expanded phrase is longer but usually plainer.

• professional

  eliminate

  the need or problem is removed completely

  not when Eliminate makes the stronger claim of complete removal.

• professional

  prevent

  action stops an event before it occurs

  not when Prevent does not fit removing an existing need.

• formal

  preclude

  conditions make an outcome impossible

  not when Preclude is stronger and more legalistic.

• literary

  forestall

  early action delays or blocks trouble

  not when Forestall may only postpone the problem.

• necessitate
• cause
• invite

• obviate the need

  A covered walkway will obviate the need for rain delays.

• obviate a problem

  Early calibration can obviate a problem at final assembly.

• largely obviate

  Shared storage would largely obviate duplicate purchases.

Obviate already means remove a need; 'obviate the need for' is standard, while 'obviate against' is usually an error.