Feeling sick is a common physical condition that can be caused by a variety of factors. It is characterized by a range of symptoms, including fatigue, dizziness, and nausea. The crossword solutions for the term feeling sick are ILL (3 letters), QUEASY (6 letters), and NAUSEOUS (8 letters). ILL is a general term used to describe feeling unwell, while QUEASY is a more specific term used to describe feeling uneasy or uncomfortable in the stomach. Finally, NAUSEOUS is an even more specific term used to describe feeling nauseated or having an urge to vomit.