Answer :

Solution :

Undiminished: not diminished, reduced, or lessened. Example: Even in his eighties, the man’s eyesight was undiminished and he could see as well as his grandson.

Thus, from the above-given explanation, we can say that 'undiminished' will be used in the blank as the sentence is trying to explain that the judge's standing in the legal community is still intact even after false allegations.