Don't prejudge the situation before hearing his full explanation.

prejudge 由前缀 pre-（表示"在...之前"）和动词 judge（判断）组成，字面意思是"在充分了解情况之前就做出判断"，即"预先判断、妄下结论"。 prejudge 强调在获取足够信息前就做出判断，通常带有负面含义，指不公正或草率的判断。