تعریف و معنای "dollars to doughnuts"

What is the origin of the idiom "dollars to doughnuts" and when to use it?

The idiom "dollars to doughnuts" originates from the early 20th century, where dollars were considered a valuable bet against something of lesser value, like doughnuts. It is used to convey a high level of confidence or certainty regarding a particular outcome or prediction.