Unheeded
Part of speech: adjective
Definition: Not heeded; not listened to; ignored; of advice, not followed.
Neglected
Part of speech: verb
Definition: To fail to care for or attend to something.
Part of speech: adjective
Definition: Suffering from neglect.
Example sentence: The European Union arose on an economic foundation, and it turns out that even this is not a solid base. Cultural identity has been neglected.