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a suffix forming adjectival derivatives of place names, esp. countries or cities, frequently used nominally to denote the inhabitants of the place or their language (Faroese; Japanese; Viennese); also occurring in coinages that denote in a disparaging, often facetious way a characteristic jargon, style, or accent: Brooklynese; journalese.
[probably orig. < Italian -ese, later representing Sp, Portuguese -es, French -ais, -ois, all < Latin -ēnsem -ensis]