Demob-happy is a term used to describe individuals who are experiencing a sense of elation and relief after being discharged or demobilized from military service. There are various synonyms that can be used to describe this feeling, such as ecstatic, jubilant, exultant, euphoric, or rapturous. Additionally, words such as liberated, carefree, and unburdened can also be used to describe the feeling of freedom that comes with the end of military service. However, it is important to note that this term can also have a negative connotation, as some individuals may experience anxiety or depression upon returning to civilian life. Overall, demob-happy is a complex feeling that can have both positive and negative aspects.