简直

The adverb “简直” is used as adverbial, meaning “exactly; simply ; virtually”. It often stresses the high degree of something in an exaggerated tone, for example,
徐悲鸿画的马简直跟真的一样。
他说广州话，我简直一句都听不懂。
一个把岁的小学生能写出这么好的字，我简直不敢相信。
大家同意她去夏令营，女儿高兴得简直睡不着觉。