1. To not be affected in any negative way (i.e. appear smaller, less reputable, loss of prestige etc.)
2. Not lessened or diminished.
1. Although the President is mocked and question on a constant basis his plans for America's future is undiminished.
2. Athletes have an undiminished devotion to their sport.
3. In a perfect world a husband's love for his wife would be forever undiminished.