The crossword solution for the term 'ISN'T DOING WELL' is AILS, which is an acronym for 'Acute Illness Syndrome'. AILS is a medical condition that is characterized by a sudden onset of symptoms such as fever, fatigue, and body aches. It is often caused by a viral or bacterial infection, and can be very serious if not treated properly. People who are suffering from AILS are not doing well and require medical attention.