adverb, noun · an adverbial expression used to emphasize the degree or sincerity of an emotion or statement, often expressing surprise, annoyance, or validation.

听到这个好消息，大家真是太高兴了。

adverb · an adverbial phrase used to emphasize that something is truly or indeed the case

你没看错，刚才走过去的那个人真是他。

adverb · used to express disapproval, annoyance, or frustration

你这个人真是，怎么一点道理都不讲？

adverb · truly or indeed; used for emphasis in an affirmative sense

你这个人真是，这么大的事情也不商量一下。