A Manhattan woman is losing patience waiting for her rich, decades-older hubby to die — so she’s trying to help things along by booting him from their home, a new lawsuit charges.

In May, socialite Antonia Kotovos Milonas, 62, forced her feeble shipping-magnate husband, Spiros Milonas, 88, to change their prenuptial agreement to land an $8.4 million payday, the Manhattan civil suit says.

“Given their 27-year age difference, Antonia is disgracefully just waiting for Spiros to die,” the suit says.

“In anticipation of that day she is doing all she can — by threats, abuse and undue influence — to grab as much money for herself through frustrating Spiros’ wishes for his children and grandchildren,” the suit says.

The $8.4 million really belongs to Spiros’ two adult children from a previous marriage in the form of their inheritance, according to the filing.

Trusts controlled by the father and his daughters — Sofia Dingle and Claire Milonas — lent the $8.4 million to a real estate venture called Axia in 2015 and 2016.

Spiros, the head of Ionian Management, and Antonia established Axia to convert an East 72nd Street apartment building into luxury condominiums. The loan allowed the magnate and his second wife to develop the property for lower interest rates and no mortgage taxes, said Burstein.

Then the second wife got impatient — and greedy, the suit charges.

“Antonia [even instructed] her housekeeper to pack all of Spiros’ belongings so that she could throw her elderly husband out of their home,” the suit claims.

The May-December couple, who married in 2001, are not divorcing — they still live together in their West 57th Street apartment, where she “routinely yells and acts abusively towards Spiros,” the suit says.

Antonia let her husband stay when he agreed to forgive the loan from the family trust funds, according to court papers.

“There’s a special place in hell reserved for Antonia Milonas,” fumed the family’s longtime attorney, Judd Burstein.

“He’s the subject of the worst elder abuse,” Burstein added, noting that his client is competent enough to file the suit on his own behalf.

The suit seeks at least $10 million in damages.

Antonia did not return messages. Her attorney declined to comment.

Spiros once dated the late comedian Joan Rivers.

One of his daughters, Milonas, made headlines in 2010 for having a baby with former President Barack Obama’s budget guru, Peter Orszag, just before the White House finance director allegedly jilted her in favor of ABC financial correspondent Bianna Golodryga.