The crossword solution for the term 'JUST ___' or 'JUST '___'' is 'CAUSE'. The term 'JUST CAUSE' is a legal phrase used to describe a valid reason for an action, such as termination of employment or other disciplinary action. It is also used in criminal law to refer to a crime that is committed with a valid purpose. In civil law, it is used to refer to a valid reason for a lawsuit. In both cases, the burden of proof is on the party claiming JUST CAUSE.