The crossword solution for the term ONE CARRYING ON A TRADE is PLYER, which is a five-letter word. A plyer is someone who engages in a trade or business, typically as a self-employed person. They are usually independent contractors who provide services to other businesses or individuals. Plyers often specialize in a particular field, such as carpentry, plumbing, or electrical work. They may also be involved in retail sales, marketing, or other types of services.