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Definitions

weakness

[week-nis] / ˈwik nɪs /
NOUN
defect, proneness
Synonyms
STRONGEST
deficiency failing flaw fragility frailty gap instability lack lapse shortcoming vulnerability
STRONG
appetite blemish debility decrepitude delicacy enervation faintness fault feebleness fondness impairment imperfection impotence inclination inconstancy indecision infirmity invalidity irresolution languor liking passion penchant powerlessness predilection proclivity prostration senility taste vice vitiation
WEAK
Achilles heel chink in armor soft spot sore point
Antonyms
STRONGEST
advantage perfection strength strong point success
STRONG
ability health robustness soundness

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.

It noted that the first half of April tends to exhibit weakness in retail-investor activity because of the approach of Tax Day.

From MarketWatch • Apr. 9, 2026

ALS, on the other hand, targets motor neurons, causing progressive muscle weakness that eventually leads to paralysis.

From Science Daily • Apr. 9, 2026

Precious metals rose in early trade, boosted by dollar weakness which makes USD-denominated gold and silver cheaper for holders of non-USD currencies.

From The Wall Street Journal • Apr. 8, 2026

A doji candle and a bearish shooting star on Feb. 12 and 18 reinforced that weakness.

From Barron's • Apr. 6, 2026

“Mr. Wingfield most strenuously recommended it, sir—or we should not have gone. He recommended it for all the children, but particularly for the weakness in little Bella’s throat,—both sea air and bathing.”

From "Emma" by Jane Austen