Definition - A suffix added to nouns and adjectives that is used to identify:

(1) nationalities and languages (e.g. Chinese),
(2) styles and registers of English (e.g. officialese), and
(3) certain authors who are accused of writing in a dialect of their own invention (e.g. Johnsonese).

Example -
legalese, Pentagonese, agglomerese and bureaucratese

Etymology -
The suffix derives from the Old French -eis (which became the modern French -ois and -ais) and ultimately from the Latin -ensem, belonging to or originating in.

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