Being scolded by the teacher in front of the whole class was extremely humiliating for him.

humiliating 是动词 humiliate 的现在分词形式，用作形容词。humiliate 由词根 hum（来自拉丁语 humus，意为"土地"）和后缀 -iliate（使...）组成，字面意思是"使贴近地面"，引申为"使蒙羞、使丢脸"。 humiliating 表示"令人感到羞辱的、丢脸的"，描述使人自尊心受损的状态或行为。