1
2
3
as in thin
not containing very much of some important element the coffee came out too weak because I didn't use enough ground beans

Synonyms & Similar Words

Antonyms & Near Antonyms

4
5

Synonym Chooser

How does the adjective weak contrast with its synonyms?

Some common synonyms of weak are decrepit, feeble, fragile, frail, and infirm. While all these words mean "not strong enough to endure strain, pressure, or strenuous effort," weak applies to deficiency or inferiority in strength or power of any sort.

felt weak after the surgery

When is it sensible to use decrepit instead of weak?

The synonyms decrepit and weak are sometimes interchangeable, but decrepit implies being worn-out or broken-down from long use or old age.

the dowager's decrepit retainers

In what contexts can feeble take the place of weak?

Although the words feeble and weak have much in common, feeble suggests extreme weakness inviting pity or contempt.

a feeble attempt to walk

When might fragile be a better fit than weak?

While in some cases nearly identical to weak, fragile suggests frailty and brittleness unable to resist rough usage.

a reclusive poet too fragile for the rigors of this world

When is frail a more appropriate choice than weak?

The meanings of frail and weak largely overlap; however, frail implies delicacy and slightness of constitution or structure.

a frail teenager unable to enjoy sports

Where would infirm be a reasonable alternative to weak?

The words infirm and weak are synonyms, but do differ in nuance. Specifically, infirm suggests instability, unsoundness, and insecurity due to old age or crippling illness.

infirm residents requiring constant care

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of weak Three hearts is a weak call showing a fit. Deb Harvell, Arkansas Online, 28 Sep. 2025 People are too casual to throw out terms that inflame others, weak minds. Kristen Jordan Shamus, Freep.com, 28 Sep. 2025 But in October of that year, Nortel, a much better operator, also announced that business had grown very weak. Jim Cramer, CNBC, 28 Sep. 2025 Coming into this year, many farmers were just hoping to break even because crop prices were weak while their costs had only increased. Preston Fore, Fortune, 27 Sep. 2025 See All Example Sentences for weak
Recent Examples of Synonyms for weak
Adjective
  • Listeria monocytogenes, or Lm, is a bacterium that causes listeriosis, a serious infection that primarily affects older adults, individuals with weakened immune systems, pregnant women and their newborns.
    Amaris Encinas, USA Today, 26 Sep. 2025
  • Severe infections are particularly dangerous for young children, elderly people, and those with weakened immune systems.
    Peter Aitken, MSNBC Newsweek, 20 Sep. 2025
Adjective
  • As a result, when animals died and sank, their soft tissues were occasionally preserved instead of being consumed or decaying.
    Mrigakshi Dixit, Interesting Engineering, 29 Sep. 2025
  • Hamilton Chaise Sectional Sofa Made from a soft polyester blend, this couch has deep seats designed for ultimate relaxation.
    Jacqueline Tempera, PEOPLE, 29 Sep. 2025
Adjective
  • Such devices must be thin and resilient, capable of working where rigid materials fail.
    Neetika Walter, Interesting Engineering, 26 Sep. 2025
  • Long wigs and extensions almost always run on the thinner side by default—an issue hair companies still haven’t really solved.
    Noel Cymone Walker, StyleCaster, 25 Sep. 2025
Adjective
  • Republicans argue that Democrats are making unreasonable demands on a stopgap bill that historically has served as a narrow, short-term bridge.
    Nik Popli, Time, 29 Sep. 2025
  • Vice President Vance, meanwhile, accused Democrats of making unreasonable demands.
    The Hill staff, The Hill, 29 Sep. 2025
Adjective
  • This is obvious enough in the contrast between the aggressive takedown in humor and the helpless surrender in tears.
    Big Think, Big Think, 23 Sep. 2025
  • The series also starred Portia de Rossi as the family's layabout daughter, Lindsay; David Cross as her aspiring actor husband, Tobias; Alia Shawkat as their teen daughter, Maeby; Jessica Walter as the family's elitist matriarch, Lucille; and Tony Hale as the dynasty's helpless youngest son, Buster.
    Wesley Stenzel, Entertainment Weekly, 22 Sep. 2025
Adjective
  • Without electrification, Simpliciano said, renewable targets run the risk of being feeble and ineffective, with brands potentially turning to biomass and other problematic substitutions as stopgap measures.
    Jasmin Malik Chua, Sourcing Journal, 25 Sep. 2025
  • This politicization of what should be an economic solution again highlights California’s feeble legislative ability.
    U T Readers, San Diego Union-Tribune, 22 Sep. 2025
Adjective
  • Listeria monocytogenes is an organism which can cause serious and sometimes fatal infections in young children, frail or elderly people and others with weakened immune systems.
    City News Service, Oc Register, 27 Sep. 2025
  • Today’s over-85 cohort may also be frailer and sicker than the oldest-old were 30 years ago, Gill added, because contemporary medicine can keep people alive longer.
    Paula Span, Miami Herald, 25 Sep. 2025
Adjective
  • For example, Wilson’s team is exploring whether dilute acids speed up weathering.
    Robert F. Service, Science | AAAS, 3 Sep. 2020
  • The company reported a net loss during the first quarter of $3.9 million, or 11 cents diluted loss per share, compared to a net income of $4.3 million, or 12 cents dilute earnings per share over the same period last year.
    Paul Takahashi, Houston Chronicle, 5 June 2018

Browse Nearby Words

Cite this Entry

“Weak.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/weak. Accessed 1 Oct. 2025.

More from Merriam-Webster on weak

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!