Megan Thee Stallion might still not have all of hip hop in her corner after the Tory Lanez verdict -- but she's got one of the biggest pop stars around backing her ... Adele.

The singer sent a heartful message of support Friday to MTS ... who was just vindicated after a jury unanimously decided Tory had, in fact, shot her in 2020 ... and was guilty of the charges brought against him. In light of that, Adele's wishing her peace for the holidays.