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faultless

[fawlt-lis]
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adjective
  1. without fault, flaw, or defect; perfect.
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Origin of faultless

First recorded in 1300–50, faultless is from the Middle English word fautles. See fault, -less
Related formsfault·less·ly, adverbfault·less·ness, noun

Synonyms

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flawless, impeccable, exemplary, irreproachable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for faultless

faultless

adjective
  1. without fault; perfect or blameless
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Derived Formsfaultlessly, adverbfaultlessness, noun
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 faultless

adj.

mid-14c., "having no blemishes or imperfections," from fault (n.) + -less. Meaning "having no blame, culpability, or guilt" is from 1570s. Related: Faultlessly; faultlessness.

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Online Etymology Dictionary, © 2010 Douglas Harper