Here are examples for each of the 10 prefixes: What are prefixes? Prefixes are small groups of letters added to the beginning of a word to change its meaning. Un- (not): Unhappy: She was unhappy with the results. Untidy: His room was untidy and needed cleaning. Unfair: It’s unfair that they had extra time to complete the test. Re- (again): Redo: I had to redo my homework because it was incorrect. Rewrite: She decided to rewrite her essay for a better grade. Recycle: It’s important to recycle paper and plastic to protect the environment. Pre- (before): Preview: We watched the movie's preview before deciding to buy tickets. Prepare: She prepared her presentation a week in advance. Preheat: Preheat the oven to 350°F before baking the cake. Mis- (wrongly): Misunderstand: I didn’t mean to misunderstand your instructions. Misspell: It’s easy to misspell long words. Mislead: The advertisement was designed to mislead customers. Dis- (opposite of, not): Disagree: They often disagree about politics. Disappear: The magician made the rabbit disappear. Disconnect: Please disconnect the phone before repairing it. Sub- (under): Submarine: The submarine explored the ocean’s depths. Subway: We took the subway to get across the city. Submerge: The boat was submerged in water after the storm. Inter- (between): International: She loves traveling to international destinations. Interpersonal: Interpersonal skills are important in the workplace. Interact: It’s good for children to interact with their peers. Trans- (across): Transport: Goods were transported across the country by truck. Translate: I had to translate the letter from French to English. Transmit: The signal was transmitted through the radio tower. Over- (too much): Overcook: Be careful not to overcook the pasta. Overload: The truck was overloaded with cargo. Oversleep: I missed the bus because I overslept. Non- (not): Nonstop: The flight was nonstop from New York to Tokyo.