without fault, flaw, or defect; perfect.

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 for faultless

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for faultless



without fault; perfect or blameless
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

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

Online Etymology Dictionary, © 2010 Douglas Harper