Answer:

rowing

AnswerCrossword Clue
ROWINGMaking waves?
ROWINGSport in which you must use your scull
ROWINGQuarreling.
ROWINGCentral Park activity.
ROWINGVarsity sport.
ROWINGWater sport.
ROWINGEngaging in a donnybrook.
ROWINGMaking waves, in a way
ROWINGOarsman's activity
ROWINGCrew sport
ROWINGOlympic sport with strokes