Expressions (phrases, clauses, etc.), Godan verb with 'gu' endingto unmask (someone's true nature)

Expressions (phrases, clauses, etc.), Godan verb with 'su' endingto show one's true colors; to expose one's true character

Expressions (phrases, clauses, etc.), Ichidan verbto betray oneself; to reveal one's true colors; to show the cloven hoof; to throw off the mask; to give oneself away