1
a
: a defect in physical structure or form
a diamond with a flaw
b
: an imperfection or weakness and especially one that detracts from the whole or hinders effectiveness
vanity was the flaw in his character
a flaw in the book's plot
2
obsolete : fragment

flaw

2 of 3

verb

flawed; flawing; flaws

transitive verb

: to make flaws in : mar

intransitive verb

: to become defective

flaw

3 of 3

noun (2)

1
: a sudden brief burst of wind
the wind changed with flaws from westward Archibald MacLeish
also : a spell of stormy weather
2
obsolete : an outburst especially of passion

Examples of flaw in a Sentence

Noun (1) noted the flaw in the diamond before I bought it Verb that crack has flawed the vase to the extent that its value in the antiques market is greatly reduced
Recent Examples on the Web
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Verb
If the data feeding an agent is incomplete, inconsistent or outdated, the agent’s actions may be flawed. Robert Kramer, Forbes.com, 21 Aug. 2025 Last December, a federal bankruptcy court judge in Texas stopped a sale to The Onion, saying the bankruptcy auction process was flawed. Tovia Smith, NPR, 13 Aug. 2025
Noun
The death toll was exacerbated because the levees in New Orleans were breached, a failure blamed afterward on engineering flaws and cost-saving measures by the U.S. Army Corps of Engineers when they were built. Susan Page, USA Today, 29 Aug. 2025 The bottom line is this: The Gambler just got rid of one of the league’s best players, a young man seemingly entering the prime of his career, because of the owner’s own flaws: stubbornness, a lack of urgency, and miscalculations of his adversaries and of the market. Michael Silver, New York Times, 29 Aug. 2025 See All Example Sentences for flaw

Word History

Etymology

Noun (1) and Verb

Middle English, flake, from Old Norse flaga stone slab, moldar flaga thin layer of turf; akin to Old English flōh flat stone

Noun (2)

of Scandinavian origin; akin to Norwegian flaga gust, squall

First Known Use

Noun (1)

1586, in the meaning defined at sense 1a

Verb

1610, in the meaning defined at transitive sense

Noun (2)

1513, in the meaning defined at sense 1

Time Traveler
The first known use of flaw was in 1513

Browse Nearby Words

Cite this Entry

“Flaw.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flaw. Accessed 4 Sep. 2025.

Kids Definition

: a small often hidden defect
flawless
-ləs
adjective
flawlessly adverb
flawlessness noun

flaw

2 of 2 verb
: to make or become defective

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