"person to whom a privilege or concession has been granted," 1848, from French concessionaire "person to whom a concession has been granted," from concession, from Latin concessionem "an allowing" (see concession). Native form concessionary is attested from 1854; American English concessioner is from 1899.
concert
concerted
concertina
concerto
concession
concessionaire
concessive
conch
conchology
concierge
conciliate