ˌantidisestablishmenˈtarianismn.
Properly, opposition to the disestablishment of the Church of England (rare): but popularly cited as an example of a long word.
ΘΚΠ
society > faith > church government > kinds of church government > establishmentarianism > [noun] > making > removal of > opposition to
antidisestablishmentarianism1923
1923 in Brewer's Dict. Phr. & Fable (new ed.) at Long words,
1960 Amrita Bazar Patrika 17 June 6/4 But then ‘Antidisestablishmentarianism’ contains three more letters, as pointed out by two readers.
1984 T. Augarde Oxf. Guide Word Games xxvi. 216 The longest words that most people know are antidisestablishmentarianism..and supercalifragilisticexpialidocious.
Derivatives
antidisestablishmentarian n.
ΚΠ
1900 N. & Q. 25 Aug. 147/1 In the recent biography of Dr. Benson is an entry from the Archbishop's diary to the effect that ‘the Free Kirk of the North of Scotland are strong antidisestablishmentarians’.
This entry has not yet been fully updated (first published 1989; most recently modified version published online November 2010).
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n.1900