Has Gov. Cuomo lost his way?

Getting sucked into a war of words with Mayor de Blasio — and looking like the smaller man — is the latest sign that Gov. Cuomo is in a funk. Gone is the happy warrior who confidently notched one impressive and improbable victory after another when he first took office four years ago.

In his place is a governor who’s struggling to gain traction for his legislative priorities, running out of friends in politics and blowing up over petty slights from a fellow Democrat in City Hall.

Here’s hoping Cuomo snaps out of it, and soon, or this will be long second term for all concerned.

The feud between Cuomo and de Blasio is nothing new, nor is tension between New York governors and New York City mayors generally. What’s different this time is that Cuomo let himself be played.

It started last week when the mayor went to Albany to lobby for renewal and reform of the city’s 421-a tax breaks, which de Blasio sees as a crucial way to promote affordable housing.

With the existing law expiring next month, de Blasio declared: “We need leadership, and we know the governor has been able in the past to make real change here in Albany and get big things done. This is a moment when we need that leadership.”

Cuomo could have let that implied but respectful criticism slide. Instead, he fired back with snark from an anonymous aide: “It was nice he showed up. But to appear in the Capitol a few days before the end of session . . . is not how leaders get things done.”

This despite the fact that the governor has yet to offer a reform plan of his own.

Recognizing he had the upper hand, de Blasio kept pushing — by saying he was disappointed that governor wasn’t being a better “partner” with City Hall.

Again, Cuomo rashly took the bait — this time attacking de Blasio’s proposal as a “sweetheart deal” for failing to require that developers receiving tax breaks pay unionlevel wages to their construction workers.

This was a head-scratcher. First, because imposing such a mandate, and substantially inflating what are already decent wages, would undermine the “affordable” part of affordable housing. Second, because developers have been among Cuomo’s biggest and most loyal political backers.

Behind the scenes, meanwhile, Cuomo was reportedly angered when Karen Hinton — who worked for him when he was federal housing secretary, and who is married to a former top aide in the governor’s office — took a job as de Blasio’s press secretary, which the governor saw as disloyal.

Suddenly, the script was flipped: De Blasio was standing up to bullying, and Cuomo was sputtering and flailing in response.

Why Cuomo would be off his game is not hard to explain.

The rapidfire arrests of both Assembly Speaker Sheldon Silver and Senate Majority Leader Dean Skelos — and the threat of more to come from U.S. Attorney Preet Bharara — has cast an ugly shadow over the entire Capitol, including a governor who has sometimes boasted about his progress in cleaning the place up.

His approval ratings have dropped to the lowest level of his governorship.

He’s alienated conservative Republicans with his well-intended gun-control law, progressive Democrats with his properly centrist tack on taxes and spending and many others with his vindictive ways.

He drew withering attacks from the teachers unions when he admirably fought for more accountability from the nation’s costliest public school system. That fight cost him with many parents, too.

In his personal life, Cuomo has seen the Jan. 1 death of his father, former Gov. Mario Cuomo, and the recent breast-cancer surgery of his girlfriend, Food Network host Sandra Lee — for which he deserves enormous sympathy and slack.

Beyond all that may be another factor: the demise of any hope of running for President in 2016, and perhaps forever.

“He does best when he has something to look forward to,” said one associate.

Having twice won the highest elected office in the state, then finding the next rung on the ladder foreclosed, he’s lacking for grand ambition. “He feels boxed; it’s driving him crazy,” the associate said. “He’s just not enjoying it anymore.”

Cuomo has much to be proud of — especially the legalization of gay marriage and five years of timely, generally disciplined budgets.

For his own good, and the state’s, he needs to keep his temper in check and go back to fighting those good fights.