Definition of peter out

The phrase "peter out" is a figurative expression that has its origins in athletics. It is believed to have first appeared in the early 20th century and refers to the point at which a runner, particularly in long-distance races, runs out of energy and cannot continue. The origin of the term "peter out" is attributed to a famous American distance runner named Peter Liczbinksi. Liczbinksi, who competed in the late 1800s and early 1900s, was known for his strong starts but would often struggle in the later stages of races, ultimately "petering out." The phrase "peter out" gained popularity in the sports world and soon spread to other contexts, where it is now commonly used to describe the point at which any activity, effort, or endeavor fizzles out or comes to a stop due to a lack of energy, resources, or motivation. In summary, "peter out" is a figurative expression borrowed from athletics that refers to the point at which an individual's energy or resources are exhausted, ultimately resulting in a lack of continued effort, extension, or productivity.