The film does a great job of humanising the villain by showing his childhood experiences.

humanising 是动词 humanise 的现在分词形式。humanise 由词根 human（人类、人性）加上动词后缀 -ise（使...化）构成，意思是"赋予人性特征"或"使更人性化"。在句中表示通过展示童年经历让反派角色显得更有人性化。