The phrase "are derelict" refers to something that has been abandoned or neglected, and there are several synonyms that could be used to describe it. "Abandoned," "deserted," and "forgotten" are all similar in meaning to derelict. "Neglected," "run-down," and "shabby" are other synonyms that could be used to describe something that has been left in disrepair. Additionally, "dilapidated," "ruined," and "decrepit" could also be used to describe something that is in a state of disrepair or abandonment. These synonyms convey a sense of neglect and abandonment that is associated with something that is derelict.