The opposite end of the forearm is the elbow. More precisely, the forearm runs from the elbow to the wrist, so the end opposite the wrist is the elbow region.

Quick Scoop

  • Forearm = the part of the arm between the elbow and the wrist.
  • The end opposite the wrist is the elbow or the elbow region.
  • If you mean the “inside” of the elbow, that area is called the antecubital fossa.

TL;DR: The opposite end of the forearm is the elbow.