(intransitive) To stick fast or cleave, as a glutinous substance does; to become joined or united.
Wax adhered to his finger.
December 23 2016, Victoria Neff in Roanoke Rapids Daily Herald, The story of mistletoe
Mistletoe is an evergreen perennial shrub that has female plants that produce white berries. These white berries are a favorite food of birds who help to reseed the sticky seeds that adhere to tree branches.
(intransitive, figurative) To be attached or devoted by personal union, in belief, on principle, etc.
December 13 2016, Secret aid worker, Secret aid worker: NGOs can be efficient, if it involves sacrificing staff
But from then on, everything went full speed. A tight timeline was adhered to and it became clear that the organisation’s new direction saw no value in keeping or developing the talents it had previously hired.
(intransitive, figurative) To be consistent or coherent; to be in accordance; to agree.