1) Business 2) Clients 3) Consumers 4) Customer list 5) Customers collectively 6) Dependents or followers 7) French word used in English 8) Patronage 9) Patrons 10) Patrons collectively 11) People 12) Regular customers 13) Regulars 14) Trade 1) Buyers 2) Clientage 3) Constituency 4) Customers 5) Patrons 6) Trade 
• (n.) The persons who make habitual use of the services of another person; one`s clients, collectively; as, the clientele of a lawyer, doctor, notary, etc. • (n.) The condition or position of a client; clientship • (n.) The clients or dependents of a nobleman of patron.
Cli`en·tele' noun [ Latin clientela : confer French clientèle .] 1. The condition or position of a client; clientship . [ Obsolete] Bp. Hall. 2. The clients or dependents of a nobleman of patron. 3. The persons who make habitual use of the services of a...
customers 
[n] - customers collectively
clientele 1. The clients or customers of a professional organization or business, considered as a group. 2. Dependents or followers.
patronage noun customers collectively; `they have an upper class clientele`
the clients or customers, as of a professional person or shop, considered collectively; a group or body of clients: This jewelry store has a wealthy clientele. · dependents or followers.