[ fawl-tee ]
/ ˈfɔl ti /

adjective, fault·i·er, fault·i·est.

having faults or defects; imperfect.

Origin of faulty

First recorded in 1300–50, faulty is from the Middle English word fauty. See fault, -y1
Related formsfault·i·ly, adverbfault·i·ness, nounnon·fault·y, adjectiveun·fault·y, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unfaulty

  • Let me wrap myself about in the mantle of my own integrity, and take comfort in my unfaulty intention!

    Clarissa, Volume 3 (of 9)|Samuel Richardson

British Dictionary definitions for unfaulty


/ (ˈfɔːltɪ) /

adjective faultier or faultiest

defective or imperfect
archaic culpable
Derived Formsfaultily, adverbfaultiness, 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 unfaulty



late 14c., from fault (n.) + -y (2). Related: Faultiness.

Online Etymology Dictionary, © 2010 Douglas Harper