The word 'posse' is correct and can be used in written English.
It is usually used to refer to a group of people, typically a group of friends or allies, who work together to accomplish a task. Example: My posse and I are planning a surprise party for my best friend.
I have been in trouble with zealots in the Twitter posse this week for mildly suggesting that though Alistair Carmichael's conduct in the "Frenchgate" election leak showed poor character and judgment, his removal as Scotland's last Lib Dem MP should remain a matter for his constituents in Orkney and Shetland.
There was one moment during the impeccable choreography of Margaret Thatcher's funeral cortege arriving at St Paul's that felt eerily unseemly: the coffin, with its union flag shroud, draped in white flowers, on a gun carriage behind a posse of elegant horses.
In real life, Cesare survived syphilis and malaria but was eventually hunted down and hacked to death at the age of 31 by an assassination posse of 70 horsemen.
There are definitely elements of Clash of Clans in this Wild West-themed game, but it's got a spark of originality too as you build your posse, explore the wild frontier and protect your town.
Carswell and Farage, some of whose allies describe their new MP as "tricky", put on a show of unity when the Ukip leader swept into the centre of Clacton in his black Range Rover, accompanied by his posse of security guards, for a brief walkabout.
Our confidence never recovered from the debacle of the crumhorn, and within minutes of curtain down we were advancing on the director like a posse of vengeful villagers approaching Castle Dracula.
In those days Morrison was a big name, and big names have a posse.
In fact the lesson turned out to be a jog on the sands with a party of 15 other riders, none of whom were aged over 12. Thinking back, I recalled little of the event except for the raucous laughter of locals on the seafront as I trotted past with this posse of Thelwell lookalikes.
As I moved from room to room I was followed by a posse of assistants.
Politicians who should know better, such as Dean Heller, Nevada's Republican senator, and Brian Sandoval, the state's mild-mannered governor, were all too quick to suggest that the story's real villains are the federal officials seeking to enforce multiple court orders against Mr Bundy, rather than the ragtag posse ranged against them.
In the West, a posse of pressure groups such as Greenpeace and the Environmental Defence Fund started up in the 1960s and helped bring about legislation in the 1970s and 1980s.Growth also has indirect benefits for biodiversity.
