1 unsound | Definition of unsound

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

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Other Words from unsound

unsoundly \ ˌən-​ˈsau̇n(d)-​lÄ“ How to pronounce unsoundly (audio) \ adverb

Synonyms & Antonyms for unsound

Synonyms

balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], certifiable, crackbrained, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, demented, deranged, fruity [slang], gaga, haywire, insane, kooky (also kookie), loco [slang], loony (also looney), loony tunes (or looney tunes), lunatic, mad, maniacal (also maniac), mental, meshuga (or meshugge), moonstruck, non compos mentis, nuts, nutty, psycho, psychotic, scatty [chiefly British], screwy, unbalanced, unhinged, wacko (also whacko), wacky (also whacky), wud [chiefly Scottish]

Antonyms

balanced, compos mentis, sane, sound, uncrazy

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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

While legal, self-prescribing medication is considered an unsound practice by some in the medical establishment. David Armstrong, ProPublica, "In Men, It’s Parkinson’s. In Women, It’s Hysteria.," 23 Aug. 2019 Whether Trump possesses the tenacity or the attention span to initiate a resolute and courageous liquidation of America’s unsound position in the Persian Gulf will seem unlikely to many. Andrew J. Bacevich, Twin Cities, "Andrew Bacevich: Trump’s reluctance to bomb foreign countries is a strength, not a sign of weakness," 4 July 2019 Facebook also hosts a number of groups and pages for unsound medical advice. Cat Zakrzewski, Washington Post, "The Technology 202: Social media companies readying to combat disinformation in Democratic debates," 26 June 2019 An unsound ruling could injure the constitutional order, but so does continuing legal confusion that invites more federal regulation and more litigation against states. The Editorial Board, WSJ, "Behind the Supreme Court’s Dodge," 12 Dec. 2018 Saban made the smart business decision where Meyer made the emotionally unsound one. John Talty | Jtalty@al.com, al, "Nick Saban, Alabama smartly dodge Zach Smith headache," 3 Aug. 2019 Brock’s erratic outfield play and unsound baserunning. Paul Sullivan, chicagotribune.com, "Former Cubs pitcher Ernie Broglio, who was part of the famous Lou Brock trade with the Cardinals, dies at 83," 17 July 2019 In short, the strong desire to feel better about their situation might have driven people in that group to make an unsound decision. Aldo Svaldi, The Denver Post, "More than a third of Denver-metro area rents, yet a stigma still attached to not owning a home," 9 July 2019 Every bridge player occasionally hears a little voice urging him toward a bid or play that is unsound. Frank Stewart, The Mercury News, "Bridge: July 8, 2019," 8 July 2019

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.

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First Known Use of unsound

14th century, in the meaning defined above

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More Definitions for unsound

unsound

adjective

English Language Learners Definition of unsound

: not based on truth or logic : not showing good judgment
: poorly built or in bad condition