The word 'trinket' entered English in the 16th century, originally referring to a small, skillfully made article, such as a knife or a trinket for personal adornment. Its likely journey from Old French trenket, related to cutting or working with metal, suggests a connection to the craft of making small, intricate objects. Over time, the meaning shifted to emphasize the object's small size and decorative nature, often with a connotation of being showy but of little intrinsic value. This evolution reflects a common linguistic path where a term for a specific crafted item broadens into a general category for minor ornaments.

The word 'trinket' is a simplex word. It is a loanword, likely from Old French trenket (meaning a small knife or ornament), which may be derived from the verb trenquer (to cut). Its ultimate origin is uncertain but may be imitative or related to the sound of striking metal.