تعریف و معنای "[work] like (a charm|magic)"

What is the origin of the idiom "work like a charm" and when to use it?

The idiom "work like a charm" likely originates from the belief in magic or supernatural powers. In earlier times, charms were often thought to have magical properties that could bring about positive results or solve problems effortlessly. The phrase suggests that something works as effectively as a charm, implying that it functions smoothly and without complications, much like a magic spell that works flawlessly. Over time, this expression became widely used to describe anything that works particularly well or successfully.