The term 'ACT THE WORRYWART' can be broken down into six crossword solutions: FRET (4 letters), STEW (4 letters), STEWS (5 letters), FRETS (5 letters), PACE (4 letters), and ULCER (5 letters). FRET is a verb meaning to feel or express anxious unease or worry. STEW is a verb meaning to be in a state of anxious agitation. STEWS is a noun meaning a situation of great anxiety or distress. FRETS is a noun meaning a feeling of anxiety or worry. PACE is a verb meaning to move back and forth in an agitated manner. ULCER is a noun meaning a sore on the skin or a mucous membrane, caused by a disruption of the surface. Together, these words describe someone who is anxious and agitated, often pacing back and forth and feeling distressed.