PARIS — Dominique Strauss-Kahn broke his silence four months after a New York hotel maid accused him of sexual assault, calling his encounter with the woman a “moral failing” he deeply regrets, but insisting in an interview on French television Sunday that no violence was involved.

Strauss-Kahn, the former head of the International Monetary Fund and a one-time top presidential contender in his native France, also denied using violence against a French writer who claims he tried to rape her in a separate 2003 incident.

He said his May 14 sexual encounter with Nafissatou Diallo, an African immigrant who claimed that he attacked her when she entered his room in Manhattan’s Sofitel hotel to clean it, “did not involve violence, constraint or aggression.” Still, he acknowledged, it “was a moral failing and I am not proud of it. I regret it infinitely.”