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[fawl-tee] /ˈfɔl ti/
adjective, faultier, faultiest.
having faults or defects; imperfect.
Origin of faulty
1300-50; Middle English fauty. See fault, -y1
Related forms
faultily, adverb
faultiness, noun
nonfaulty, adjective
unfaulty, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for faulty
Contemporary Examples
Historical Examples
  • Procure samples of fabrics showing good and faulty ornamentation.

    Textiles and Clothing Kate Heintz Watson
  • Spare me not, therefore, my dear friend, whenever you think me in the least faulty.

    Clarissa, Volume 1 (of 9) Samuel Richardson
  • Such are the faulty parts of his character, which in all other respects was a noble one.

  • His technique was faulty, his colors daring, perhaps—but his triumph was for that the greater.

    Chip, of the Flying U B. M. Bower
  • Its characters in tree and fruit are faulty by reason of their mediocrity.

    The Pears of New York U. P. Hedrick
British Dictionary definitions for faulty


adjective faultier, faultiest
defective or imperfect
(archaic) culpable
Derived Forms
faultily, adverb
faultiness, 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
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Word Origin and History for faulty

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

Online Etymology Dictionary, © 2010 Douglas Harper
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