As far as I could ascertain, the origin of the modern sense of Neoliberalism is South American (Pinochet's time), and was also used by some American originators of nineties Third Wayism early as 1983 (see A Neoliberal's Manifesto [pdf!]), though it is primarily NOT self-applied.
On a further nuance, the English Wiki has this to say:
Neoliberalism - Wikipedia, the free encyclopedia
Strictly in the context of English-language usage the term is a syllabic abbreviation of "neoclassical liberalism", since in other languages "liberalism", minus any modifier such as "social" (as in social liberalism), has more or less retained its classical meaning.
