The word "priceless" refers to something that is so valuable or important that it cannot be measured in terms of money. It often describes treasures, experiences, or feelings that hold immense worth to a person or group, making them irreplaceable.
The word "priceless" dates back to the late 15th century, combining "price" (meaning the monetary value of something) with the suffix "-less," which indicates the absence of something. Thus, "priceless" literally means "without price" or "beyond price."