clientele (n.) Look up clientele at Dictionary.com
1560s, "body of professed adherents," from French clientèle (16c.), from Latin clientela "relationship between dependent and patron, body of clients," from clientem (nominative cliens; see client). Meaning "customers, those who regularly patronize a business or professional" is from 1857, perhaps a reborrowing from French (it was used in English in italics as a foreign word from 1836).