unsound

adjective
un·​sound | \ ˌən-ˈsau̇nd How to pronounce unsound (audio) \

Definition of unsound

: not sound: such as
a : not healthy or whole an unsound horse
b : not mentally normal : not wholly sane of unsound mind
c : not firmly made, placed, or fixed structurally unsound
d : not valid or true : invalid, specious unsound beliefs

Other Words from unsound

unsoundly \ ˌən-​ˈsau̇n(d)-​lē How to pronounce unsound (audio) \ adverb

Synonyms & Antonyms for unsound

Synonyms

Antonyms

Visit the Thesaurus for More 

Examples of unsound in a Sentence

The roof is structurally unsound. disgruntled relatives tried to prove that the woman was of unsound mind when she made her will
Recent Examples on the Web The Times also reported that correspondence about the fake electors wasn't shared with the White House Counsel's Office, which had already rejected the idea as legally unsound. Ronald J. Hansen, The Arizona Republic, 26 July 2022 So pay attention to anti-patterns and work to weed out unsound business processes that will cause problems further down the line. Stephen Hau, Forbes, 5 July 2022 With Wednesday night’s fundamentally unsound 4-1 loss to the Tampa Bay Rays, the Red Sox dropped to 11-23 in the division. Globe Staff, BostonGlobe.com, 14 July 2022 Over the years, the original rickety wooden hotel perched on a spectacular piece of land fell into disrepair, becoming structurally unsound and an eyesore on the scenic shoreline. Irene S. Levine, Forbes, 4 July 2022 Other crucial steps the governor highlighted included retrofitting or replacing seismically unsound schools and developing an early-warning system. Brian Maffly, The Salt Lake Tribune, 29 June 2022 This argument is both legally unsound and deeply insulting. Vangela M. Wade, Time, 17 May 2022 Instead of delivering on this plan, County Executive Ball has offered an unsound, highly risky, and expensive plan with little progress being made. Baltimore Sun, 17 May 2022 Hayne’s work was repeatedly attacked in court as sloppy and scientifically unsound. Leah Willingham, ajc, 30 Apr. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unsound.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of unsound

14th century, in the meaning defined above

Learn More About unsound

Time Traveler for unsound

Time Traveler

The first known use of unsound was in the 14th century

See more words from the same century

Dictionary Entries Near unsound

unsoul

unsound

unsoundable

See More Nearby Entries 

Statistics for unsound

Last Updated

8 Aug 2022

Cite this Entry

“Unsound.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsound. Accessed 9 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for unsound

unsound

adjective
un·​sound | \ ˌən-ˈsau̇nd How to pronounce unsound (audio) \

Kids Definition of unsound

1 : not based on good reasoning or truth an unsound argument unsound advice
2 : not firmly made or placed an unsound building
3 : not healthy or in good condition unsound teeth
4 : being or having a mind that is not normal

unsound

adjective
un·​sound | \ -ˈsau̇nd How to pronounce unsound (audio) \

Medical Definition of unsound

: not sound: as
a : not healthy or whole an unsound limb an unsound horse
b : not mentally normal : not wholly sane of unsound mind
c : not fit to be eaten unsound food

Other Words from unsound

unsoundness noun

unsound

adjective
un·​sound | \ ˌən-ˈsau̇nd How to pronounce unsound (audio) \

Legal Definition of unsound

: not sound: as
a : not healthy or whole
b : not mentally normal : not wholly sane of unsound mind
c : not firmly made, placed, or fixed
d : not valid or true an unsound argument

Other Words from unsound

unsoundly adverb
unsoundness noun

More from Merriam-Webster on unsound

Nglish: Translation of unsound for Spanish Speakers

Britannica English: Translation of unsound for Arabic Speakers

WORD OF THE DAY

Test Your Vocabulary

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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