cut of (one's) jib
A person's general appearance, manner, mien, style, demeanor, or personality. A reference to the jib sails of a boat (which denoted a ship's allegiance, and therefore potential hostility), it is usually used in the phrase "like the cut of one's jib." I like the cut of your jib—you've got a brazenness in business that's pretty rare these days. I'm not sure why I don't get along with Sarah. I just don't like the cut of her jib.
the cut of someone's jib
the appearance or look of a person. This was originally a nautical expression suggested by the prominence and characteristic form of the jib (a triangular sail set forward of the foremast) as the identifying characteristic of a ship.