The phrase "already rooted" is correct and usable in written English.
It can be used to describe something that has been established or firmly set in place prior to a certain point in time.
Example: "The community was already rooted in traditions that had been passed down for generations."
Alternatives: "firmly established" or "deeply entrenched".
Does Bill envy the already rooted Root? "No, he's very proud [of what I've achieved].
These studies didn't exclude the possibility that patients at an earlier stage, without already rooted disease, might benefit.
In the last of the four cities, at the start of a nine-day run, the early winter 2013 collections are focused on designers who are already rooted and growing.
At the same time, precisely because the ideas we associate with the tea-party movement are already rooted in Texas, the tea-party movement qua movement has somewhat less visibility and traction than people might expect.
People like Mr. Wakeel and Mr. Hussein are the kind of middle-class Iraqis that the Americans are relying on to help them rebuild the country, with livelihoods already rooted in the principles of free-market capitalism.
Wrigley Field's charms have for so long substituted for team success that people tend to forget that the park's name is already rooted in commerce — before the 1927 season, the team owner William Wrigley changed the name from Cubs Park to advertise his chewing gum.
"I'm already rooting for one thinly veiled marketing campaign," says Rappo, "I'm not going to jump ship to another thinly veiled marketing campaign".
Ender's Game by Orson Scott Card Rarely do we start novels already rooting for a character from the very first sentence, but Orson Scott Card makes sure we do just that by immediately introducing us to 'the one'.
"When you find somebody who feels like such a good, earnest human being that it glows from their pores, it allows you to do more interesting things with them, because the audience is already rooting for them".
"People are already rooting for me out here," he said.
O'Donoghue notes that the early poems, like Settlers, about protestant gun-running, were already socially rooted in Northern Ireland.
