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usurpation

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

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).

Online Etymology Dictionary, © 2010 Douglas Harper