clientele
n.the group of people who regularly use a business or professional service. You use this word when talking about all the customers of a shop, restaurant, or lawyer as a single group.
n.the collective body of customers or clients of a business, professional person, or institution. Often used with a collective singular verb, though it refers to a group of individuals.
“The restaurant has a very loyal clientele.”
“The boutique's high-end clientele expects personalized service and exclusive access to new collections.”
“By shifting its marketing strategy toward younger professionals, the firm successfully diversified its clientele and reduced its dependence on a few aging accounts.”
Usually takes a singular verb; often modified by adjectives like 'loyal', 'wealthy', or 'diverse'.
“The Kusama cult has grown alongside and inside a contemporary art world of slick worldwide galleries, with branches from LA to Hong Kong, and a clientele of one percenters who buy art like jewellery.”
Borrowed from French clientèle, ultimately from Latin cliēns (English client).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.