The phrase 'definitely join' is correct and can be used in written English.
You can use it to emphasize that someone should definitely do something, usually in the context of joining a group, organization, or event. For example, you could say: "We would love for you to definitely join us for dinner tonight!".
"And yes, I've talked to Daniel Levy [the Tottenham chairman] once but that doesn't mean Romelu will definitely join Spurs.
However, while approximately equal proportions of Alarmed non-Latinos (30%) and English-language Latinos (28%) would "definitely" join a campaign, more than half (51%) of Alarmed Spanish-language Latinos say they would definitely join a campaign.
Depending on the result of the Test between Australia and India in Adelaide, either Ricky Ponting (242) or Rahul Dravid (233) will definitely join that list.
It wasn't dessert, exactly, and it wasn't dinner either, but it should definitely join pineapple tartare with chili in the book of sweet/savory revelations.
Henrik Fisker, the company's head designer and chief executive, said the Surf would definitely join the Karma as part of the company's lineup and would be available for North American and international delivery in 2013.
There has been wide speculation about where Fox planned to place Ms. Kelly, a rising star at the network, since the network's chief executive, Roger Ailes, announced that she would definitely join the Fox News prime-time lineup.
Battle is most definitely joined, and President Trump clearly thinks he will win.
The spokesperson also said that Merkl, Navle and Maple CTO Dan Cowgill "are all definitely joining at this stage".
He is definitely joining Facebook with the rest of the team.
"There was certainly a loud response on social media in response to the outage and the crypto community definitely joined in the chorus," said Mati Greenspan, senior market analyst at crypto broker eToro.
Todd Hartley prefers fettuccine, but he's definitely joining that church.
