Definition of the word spot on

The phrase "spot on" is an idiom used to describe something that is accurate, precise or perfectly right. Its origin can be traced back to the mid-19th century, when it was used in the context of marksmanship. In archery and other shooting sports, a "spot" referred to a small, circular target that was placed at a specific distance from the shooter. The objective was to hit the target as close as possible to a predetermined "bullseye" or center point. If a shooter hit the target exactly where intended, they would say "spot on" because their shot was so close and accurate that it appeared as if they had hit the "spot" itself, dead center. Over time, the phrase "spot on" began to be used more generally to describe any action, idea or statement that was perfectly accurate or on the mark. Today, it is a widely used expression in both British and American English, and has become a common feature of everyday speech.