Booing - Wikipedia Booing is an act of publicly showing displeasure for someone or something, such as an entertainer or an athlete, by loudly yelling "Boo!" and sustaining the "oo" sound by holding it out
booing - WordReference. com Dictionary of English boo1 (bo̅o̅), interj , n , pl boos, v , booed, boo•ing interj (used to express contempt or disapprobation or to startle or frighten) n an exclamation of contempt or disapproval: a loud boo from the bleachers v i to cry boo in derision v t to show disapproval of by booing