frequent

(verb) do one's shopping at; do business with; be a customer or client of. Synonyms: patronize, patronise, shop, shop at, buy at, sponsor.

(verb) be a regular or frequent visitor to a certain place. Synonyms: haunt. Example: "She haunts the ballet."

(adj) coming at short intervals or habitually. Synonyms: frequent (vs. infrequent). Examples: "A frequent guest." "Frequent complaints."

(adj) frequently encountered. Example: "A frequent (or common) error is using the transitive verb `lay' for the intransitive `lie'";."