Physically strong is a term used to describe someone who is in good physical shape and has a high level of physical strength. The term can be broken down into three crossword solutions: FIT (3 letters), ATHLETIC (8 letters), and ROBUST (6 letters). FIT is an adjective used to describe someone who is in good physical condition, ATHLETIC is an adjective used to describe someone who is strong and active, and ROBUST is an adjective used to describe someone who is strong and healthy. All three words are used to describe someone who is physically strong.