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unparalleled

[uhn-par-uh-leld]
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adjective
  1. not paralleled; unequaled or unmatched; peerless; unprecedented: unparalleled athletic ability.
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Also especially British, un·par·al·lelled.

Origin of unparalleled

First recorded in 1585–95; un-1 + parallel + -ed2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for unparalleled

unparalleled

adjective
  1. unmatched; unequalled
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unparalleled

adj.

1590s, from un- (1) "not" + past participle of parallel. Unparallel as an adjective is recorded from 1650s.

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Online Etymology Dictionary, © 2010 Douglas Harper