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usurpation

[yoo-ser-pey-shuh n, -zer-]
noun
  1. an act of usurping; wrongful or illegal encroachment, infringement, or seizure.
  2. illegal seizure and occupation of a throne.
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Origin of usurpation

1350–1400; Middle English < Latin ūsūrpātiōn- (stem of ūsūrpātiō), equivalent to ūsūrpāt(us) (past participle of ūsūrpāre to usurp) + -iōn- -ion
Related formsu·sur·pa·tive [yoo-sur-puh-tiv, ‐zur‐] /yuˈsɜr pə tɪv, ‐ˈzɜr‐/, u·sur·pa·to·ry [yoo-sur-puh-tawr-ee, ‐tohr-ee, ‐zur‐] /yuˈsɜr pəˌtɔr i, ‐ˌtoʊr i, ‐ˈzɜr‐/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for usurpatory

usurpation

n.

late 14c., from Old French usurpacion, from Latin usurpationem (nominative usurpatio), noun of action from usurpare (see usurp).

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Online Etymology Dictionary, © 2010 Douglas Harper