Definition of swell

The word "swell" has undergone significant changes in its meaning and usage over time. Originally, "swell" comes from the Old English word "swellan," which means "to burst forth or to swell." In Middle English (circa 1100-1500), "swell" referred to the act of swelling or growing larger. This sense of expansion or augmentation is still evident in words like "swelling" or "swollen." In the 17th and 18th centuries, "swell" took on a new connotation, referring to something that was impressive, grand, or ornate, such as a swell party or a swell hat. This sense of grandeur or extravagance may have been influenced by the sound of the word itself, which has a certain emphatic quality to it. Later, in the 20th century, "swell" took on yet another meaning, referring to something that is cool, excellent, or pleasing, as in "That's a swell idea!" This sense of approval or admiration may have originated in informal settings, such as teenage slang or surfer culture, and has since become a widely accepted usage.