She shouldn't have pre-judged the matter before hearing all the details.

pre-judged 是动词 pre-judge 的过去分词形式。pre-judge 由前缀 pre-（表示"在...之前"）和动词 judge（判断）组成，意思是"在了解全部事实之前就做出判断"，即"预先判断"或"妄下判断"。 pre-judged 在句中表示"已经预先判断了"的意思。