strop

A strop is not just a tool; in British English, it is also a whole mood. In its basic sense, it is a strip of leather or similar material used to give a razor, knife, or other blade a final smooth edge after sharpening. You can also use it as a verb for this action. Think of it as the last careful step before the blade is ready to use. But if you are "in a strop," you are not working on a blade at all; you are in a grumpy, upset mood. This informal use describes bad temper or sulking. Whether it is a barber preparing a razor or someone stomping around in frustration, the word carries a sense of tension.

The word "strop" has a neat double life, moving between the world of blade care and the world of human moods. In its older and more literal sense, a strop is a long strip, often made of leather, used to finish the edge of a blade after sharpening. A barber drawing a straight razor back and forth across a hanging strip is the classic image. The process does not usually do the main sharpening; instead, it smooths and aligns the edge so the blade works better. The word can also be a verb, meaning to sharpen or finish a blade in this way.

However, "strop" also has a common informal meaning, especially in British English. To "be in a strop" or "throw a strop" means to be in a bad temper, often in a sulky or annoyed way. It is the kind of mood where someone may complain, huff, or make their irritation obvious. For example, you might say, "He's in a bit of a strop because his flight was delayed."

So the word can point to a practical tool for finishing a blade, the act of using that tool, or a burst of temper. The meanings are quite different, but all are well established, and the contrast gives the word some charm in everyday English.