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Synonyms

weakness

American  
[week-nis] / ˈwik nɪs /

noun

  1. the state or quality of being weak; lack of strength, firmness, vigor, or the like; feebleness.

    Synonyms:
    fragility
    Antonyms:
    strength
  2. an inadequate or defective quality, as in a person's character; slight fault or defect.

    to show great sympathy for human weaknesses.

    Synonyms:
    flaw
  3. a self-indulgent liking or special fondness, as for a particular thing.

    I've always had a weakness for the opera.

    Synonyms:
    appetite, hunger, passion, penchant
  4. an object of special desire; something very difficult to resist.

    Chocolates were her weakness.


weakness British  
/ ˈwiːknɪs /

noun

  1. the state or quality of being weak

  2. a deficiency or failing, as in a person's character

  3. a self-indulgent fondness or liking

    a weakness for chocolates

"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

weakness Idioms  

Synonym Usage

See fault.

Other Word Forms

Derived Forms

Etymology

Origin of weakness

First recorded in 1300–50; Middle English waikenes, weikenes. See weak, -ness

Explanation

The point where something fails to work properly or to hold up is its weakness. If a building crumbles in a storm, it's probably because of a weakness — a flaw or defect — in its structure. Weakness can indicate a physical weakness, like a chair with one wobbly leg, or flaw in an idea, like a plan for a lemonade stand that doesn't include any cups for serving the lemonade. People can show weakness too, when they are helpless to take action. The origin of weakness can be traced all the way back to its Proto-Indo-European root of weik, "to bend."

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Vocabulary lists containing weakness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The buzz in Beirut of Israeli drones overhead, along with the constant din of poorly regulated diesel generators, underscores the government’s weakness.

From The Wall Street Journal • Jun. 9, 2026

One additional factor upsetting investors of late has been the continual weakness of the Korean currency USDKRW.

From MarketWatch • Jun. 9, 2026

He added that today’s rebound is “a sign investors viewed last week’s weakness as a reset in crowded trades rather than the start of a broader risk-off move.”

From Barron's • Jun. 8, 2026

Such weakness would also hurt the U.S. in nuclear talks.

From The Wall Street Journal • Jun. 8, 2026

He felt strange carrying his fatal weakness so openly, after months of keeping it hidden.

From "The House of Hades" by Rick Riordan

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