WALTHAM, Mass. — On the day in 1991 that the Senate confirmed Clarence Thomas to the Supreme Court, Anita Hill — the little-known law professor who riveted the nation by accusing him of sexual harassment — faced news cameras outside her simple brick home in Norman, Okla., with her mother by her side, and politely declined to comment on the vote.

In the nearly 23 years since, Ms. Hill, now a professor of social policy, law and women’s studies at Brandeis University here, has worked hard, she likes to say, to help women “find their voices.” She has also found hers — and she is not afraid to use it.

“I believe in my heart that he shouldn’t have been confirmed,” she said in a recent interview, acknowledging that it irritates her to see Justice Thomas on the court. “I believe that the information I provided was clear, it was verifiable, it was confirmed by contemporaneous witnesses that I had talked with. And I think what people don’t understand is that it does go to his ability to be a fair and impartial judge.”