ˈkwakˌsalvə(r) noun
( -s )
Etymology: obsolete Dutch quacksalver (now kwakzalver ), from Middle Dutch quacsalver, perhaps alteration (influenced by Middle Dutch quacken, quaken to quack, croak — of imitative origin — & salven to apply salve to, anoint) of quicsilver quicksilver; from the use of mercury in folk medicine — more at quicksilver , salve
: charlatan , quack