weak

[week]

adjective

weaker, weakest 

1. not strong; liable to yield, break, or collapse under pressure or strain; fragile; frail.

   a weak fortress; a weak spot in armor.

   Synonyms: delicate, breakable
   Antonyms: strong

2. lacking in bodily strength or healthy vigor, as from age or sickness; feeble; infirm.

   a weak old man; weak eyes.

   Synonyms: invalid, unwell, sickly, senile

3. not having much political strength, governing power, or authority.

   a weak nation; a weak ruler.

4. lacking in force, potency, or efficacy; impotent, ineffectual, or inadequate.

   weak sunlight; a weak wind.

   Synonyms: ineffective

5. lacking in rhetorical or creative force or effectiveness.

   a weak reply to the charges; one of the author's weakest novels.

6. lacking in logical or legal force or soundness.

   a weak argument.

   Synonyms: vague, lame, unsatisfactory, inconclusive, illogical, inadequate, ineffective, unsound

7. deficient in mental power, intelligence, or judgment.

   a weak mind.

   Synonyms: stupid, foolish, simple, unintelligent, silly, senseless

8. not having much moral strength or firmness, resolution, or force of character.

   to prove weak under temptation; weak compliance.

   Synonyms: weak-kneed, undecided, irresolute, unstable, vacillating

9. deficient in amount, volume, loudness, intensity, etc.; faint; slight.

   a weak current of electricity; a weak pulse.

   Synonyms: trivial, trifling, poor, flimsy, inconsiderable, slim, slender

10. deficient, lacking, or poor in something specified.

    a hand weak in trumps; I'm weak in spelling.

11. deficient in the essential or usual properties or ingredients.

    weak tea.

    Synonyms: lacking, short, wanting

12. unstressed, as a syllable, vowel, or word.

13. (of Germanic verbs) inflected with suffixes, without inherited change of the root vowel, as English work, worked, or having a preterit ending in a dental, as English bring, brought.

14. (of Germanic nouns and adjectives) inflected with endings originally appropriate to stems terminating in -n, as the adjective alte in German der alte Mann (“the old man”).

15. (of wheat or flour) having a low gluten content or having a poor quality of gluten.

16. Photography.,  thin; not dense.

17. Commerce.,  characterized by a decline in prices.

    The market was weak in the morning but rallied in the afternoon.

weak

/ wiːk /

adjective

1. lacking in physical or mental strength or force; frail or feeble

2. liable to yield, break, or give way

   a weak link in a chain

3. lacking in resolution or firmness of character

4. lacking strength, power, or intensity

   a weak voice

5. lacking strength in a particular part

   a team weak in defence

6. 1. not functioning as well as normal

      weak eyes

   2. easily upset

      a weak stomach

7. lacking in conviction, persuasiveness, etc

   a weak argument

8. lacking in political or strategic strength

   a weak state

9. lacking the usual, full, or desirable strength of flavour

   weak tea

10. grammar

    1. denoting or belonging to a class of verbs, in certain languages including the Germanic languages, whose conjugation relies on inflectional endings rather than internal vowel gradation, as look, looks, looking, looked

    2. belonging to any part-of-speech class, in any of various languages, whose inflections follow the more regular of two possible patterns Compare strong

11. (of a syllable) not accented or stressed

12. (of a fuel-air mixture) containing a relatively low proportion of fuel Compare rich

13. photog having low density or contrast; thin

14. (of an industry, market, currency, securities, etc) falling in price or characterized by falling prices

Other Word Forms

• overweak adjective
• overweakly adverb
• overweakness noun
• weakishly adverb
• weakishness noun
• weakish adjective

Word History and Origins

Origin of weak¹

First recorded in 1250–1300; Middle English weik, from Old Norse veikr; cognate with Old English wāc, Dutch week, German weich; akin to Old English wīcan “to yield, give way,” Old Norse vīkja “to move, turn, draw back,” German weichen “to yield”

Word History and Origins

Origin of weak¹

Old English wāc soft, miserable; related to Old Saxon wēk, Old High German weih, Old Norse veikr

Idioms and Phrases

• spirit is willing but the flesh is weak

Synonym Study

Weak, decrepit, feeble, weakly imply a lack of strength or of good health. Weak means not physically strong, because of extreme youth, old age, illness, etc.: weak after an attack of fever. Decrepit means old and broken in health to a marked degree: decrepit and barely able to walk. Feeble denotes much the same as weak, but connotes being pitiable or inferior: feeble and almost senile. Weakly suggests a long-standing sickly condition, a state of chronic bad health: A weakly child may become a strong adult.

Example Sentences

The BBC chairman went into his session with MPs in a fairly weak position – accused of losing grip over his board.

Read more on BBC

The company’s weak risk-adjusted capitalization and low U.S. dollar liquidity are offset in part by its access to capital markets and “prudent management of its capital structure,” the agency wrote.

Read more on Barron's

Despite a rebound in stocks on Monday, the market is weaker than it looks—and that is a good thing, analysts at Morgan Stanley say.

Read more on Barron's

Federal Reserve Gov. Christopher Waller told Fox Business he will vote for a rate cut next month, arguing inflation will come down and that the labor market is weak.

Read more on MarketWatch

He cuts the company’s 2026-2027 earnings forecasts by 55%-58% on lower olefin price assumptions and weaker projected Ebitda margins.

Read more on The Wall Street Journal

Related Words

• anemic 
• feeble 
• fragile 
• frail 
• hesitant 
• powerless 
• shaky 
• sickly 
• sluggish 
• uncertain 
• unsteady 
• weakened www.thesaurus.com
• wobbly