Legal mandate refers to a requirement or obligation that is imposed by law. There are several synonyms for this term, including legal requirement, legal obligation, legal duty, and legal responsibility. Each of these terms conveys the same basic idea - that there is a legal expectation or demand that must be fulfilled. Other related synonyms might include legal decree, legal edict, or legal directive, depending on the specific context. Regardless of the term used, the key concept remains the same: when something is mandated by law, it must be taken seriously and should be followed in order to avoid legal consequences.