形容一个猜不透的男人的英文单词

猜不透可以有不同含义,一般来说,形容人的这个“素质”可以用这些单词：
inscrutable
enigmatic
mysterious
unreadable
hard-to-read
poker-faced
inconsistent
例句：
I have known John a long time. He often comes across as being inscrutable.
John has an enigmatic personality that makes him hard to read.
Mary is often unreadable. I won't even guess what's on her mind.
Kevin is inconsistent. It's hard to know what he thinks.

a man,that could not be read clearly....

最简单的，deep就可以，he has a deep heart

sophisticated
老练，精于世故的