Frequent means happening often or repeatedly. When your teacher gives frequent quizzes, you're taking them regularly throughout the semester, multiple times rather than once or twice. A frequent visitor to the library goes there many times each week, showing up regularly rather than occasionally.

The word helps us describe patterns and habits. Frequent rainstorms might happen several times a week during spring. Someone who makes frequent mistakes on their homework is making them over and over, showing a pattern of errors. A frequent flyer travels on airplanes so often that airlines give them special benefits.

The opposite of frequent is infrequent or rare. Understanding whether something is frequent or rare helps you prepare: if thunderstorms are frequent in your area during summer, you know to bring an umbrella when you go outside. If your best friend makes frequent jokes, you learn to expect humor from them.

You can also use frequent as a verb (pronounced slightly differently, with the stress on the second syllable). When you frequent a place, you go there often. If you frequent the same pizza shop every Friday, the workers probably recognize you by now.