1. a person who settles a dispute or reaches an agreement by making concessions on both sides
2. a person who accepts or makes compromises, especially one who is willing to sacrifice principles for practical advantage
Usage: often used with negative connotation

Examples

• The compromiser on the committee helped both sides find common ground.
• She was known as a skilled compromiser who could bridge opposing viewpoints.
• Some viewed him as a pragmatic compromiser; others saw him as unprincipled.
• The compromiser proposed a solution that gave each party something it wanted.
• In politics, a good compromiser can pass legislation that satisfies most voters.
• He refused to be a compromiser and stood firm on his moral convictions.