WASHINGTON — Call it Brandon Jennings’ road rant.

The Knicks backup point guard is fed up with the club’s inability to stay focused away from the Garden.

The Knicks chartered a train to Washington after their significant home victory over the Pistons a night earlier, pulling into D.C. in the wee hours.

Then they saw their season-high two-game winning streak suffer a derailment Thursday at the Verizon Center in a 119-112 lethargic loss to the Wizards despite a too-little, too-late 47-point fourth quarter.

Jennings, who scored 15 points in the final-period binge after the Knicks had fallen behind by 27 points, was fuming after the club fell to 1-5 in road contests — their lone victory in Chicago.

“We haven’t been locking in well on the road,” Jennings said after the Knicks failed to hit the .500 mark and dropped to 5-7. “That’s our big problem. If we want to be the team we think we are, we’re going to have to lock in better on the road. We got to play 10 times harder. Teams play better when they’re at home because they’re feeling good.

“We’re the Knicks. You have to know what’s across your chest. There’s a bigger bull’s-eye on it. Everybody wants to beat us. It’s a known national team. These are games we have to win. We should be disappointed. We can’t just put together two quarters or try to come back in the fourth.”

The Wizards, coming off a despicable defeat to the Sixers, were 2-8 after having the riot act read to them by their first-year coach Scott Brooks, who questioned their professionalism.

By contrast, the Knicks looked weary and complacent, going back to their futile ways on defense, allowing Washington to shoot 60 percent from the 3-point stripe.

“This is a team desperate for a win and they got one,’’ said Jennings, who finished with 17 points and 10 assists. “They just lost to Philly [Wednesday] night. They come in and beat us. We need to be more desperate.”

And pay more attention to Jeff Hornacek’s words in opposing arenas, according to Jennings.

“When coaches are doing the game plan, we got to listen,’’ Jennings added. “When the coach is writing the play, everybody’s got to pay attention. There’s a lot at stake for us.’’

The Knicks didn’t awake until the fourth, when their spirited comeback attempt got them within nine points with 1:50 left, but they didn’t make a serious threat thereafter.

Playing near his hometown of Baltimore in front of a flock of family members, Carmelo Anthony was 1-for-8 from the 3-point line (7-of-17 overall) in a shoddy 19-point performance. “I don’t like losing here at all, this is kind of home away from home,’’ Anthony said.

Kristaps Porzingis was hardly his dominant self after a 35-point night against Detroit, finishing with 16 points on 7-of-16 shooting. The 40 minutes he logged against the Pistons the previous night proved decimating as he lacked bounce.

“Probably had an effect on him — a lot of his shots were short,’’ Hornacek said. “That’s usually a sign. But he’s young. He’ll have to learn to play in back-to-back games. It’s tough on a guy 7-3. That’s probably my fault playing him so much [Wednesday] night trying to get the win and he played great.

“We look like we were tired from last night and weren’t getting up on guys. The fight defensively wasn’t there.”

Derrick Rose had an invisible zero-assist first half before he came on in the final two periods to notch 23 of his 27 points and all four of his assists. He didn’t want to hear about weariness.

“No excuses — we’re pros,’’ Rose said. “That’s what we get paid to do. If anything if we were tired, that’s when someone else is supposed to pick your teammate up. That’s what we were trying to do but it didn’t work for us.’’

John Wall led the Wizards with 23 points and 11 assists, Bradley Beal returned from a three-game absence with a hamstring injury to score 18 points and Otto Porter Jr. added 21 points.

The Wizards built an 85-58 lead with 2:50 left in the third quarter before it turned hairy for a brief moment late in the fourth as the coterie of Knicks fans got a few minutes to cheer. Just a few.