Frequent (adjective)

1. Occurring often.
2. Happening many times.
3. Regularly occurring.
4. Common.
5. Regularly visited or used.

Origin:

From middle english, from old french frequent, from latin frequentem, frequentative of frequens, frequentem ("crowded, thronged, frequent"), from freqvens, frequentis ("crowd, throng, frequent"), from fervere ("to be crowded, to throng"). compare effervesce.

Examples:

1. He makes frequent trips to the city.
2. She has frequent headaches.
3. The train makes frequent stops.
4. The store has frequent sales.
5. He is a frequent visitor to the library.