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.

Weakness began with a bearish engulfing candle and a harami on Sept. 11 and Sept. 23, respectively.

From Barron's • Apr. 14, 2026

Weakness in the industrial diamond market has added to the unit’s problems.

From The Wall Street Journal • Feb. 20, 2026

Weakness overall sales meant firms reported being able to easily keep on top of their workloads in last month, with backlogs of work declining markedly again.

From The Wall Street Journal • Feb. 4, 2026

Weakness reflected in the dollar’s January slide may remain, as investors’ confidence in the world’s reserve currency may be somewhat shaken.

From MarketWatch • Feb. 2, 2026

The terrorists thought that they would change our aims and stop our. ambitions, but nothing changed in my life except this: Weakness, fear, and hopelessness died.

From "Malala: The Girl Who Stood Up for Education and Changed the World" by Malala Yousafzai

Vocabulary lists containing weakness

Florida's B.E.S.T. Common Suffixes: -ness

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Unit 1, Week 4

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The Suffix -ness, Part 1

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