oversimplify
1. [ verb ] simplify to an excessive degree
Examples:

"Don't oversimplify the problem"

Related terms: overdo oversimplification
2. [ verb ] make too simple
Examples:

"Don't oversimplify the instructions"

Related terms: simplify oversimplification
Similar spelling:   oversimplified
  overspill
  oversized
  oversight
  oversupply
  overcrossing