The term 'win decisively' can be summarized by three crossword solutions: SWEEP (5 letters), ROMP (4 letters), and ROUT (4 letters). SWEEP means to clean or clear away, while ROMP means to play or move about in a lively or boisterous manner. ROUT is an old military term meaning to defeat completely. All three words imply a decisive victory, with SWEEP suggesting a thoroughness, ROMP suggesting a joyousness, and ROUT suggesting a finality.