adj

unsound

uhn-SOWND

Unsound (adj) means not structurally solid; weak or defective. Example: “Engineers condemned the bridge as structurally unsound.”

adj

Not structurally solid; weak or defective.

"Engineers condemned the bridge as structurally unsound."

Not mentally or physically healthy.

"The defence argued the suspect was of unsound mind at the time."

Not reliable or well-founded, as of an argument or judgement.

"Critics called the economic theory unsound and outdated."

How to use unsound

Learner’s notes

In plain EnglishWeak or faulty — physically, mentally, or logically.

Common pairings

structurally unsound unsound mind unsound argument

more unsound comparative, unsounder comparative, most unsound superlative, unsoundest superlative

Study it as flashcards or scroll it in Flow — saved to your collection.

Can you complete this real example?

Engineers condemned the bridge as structurally _____.

sound

go sound voice seem channel healthy volume bay

pound wound sound bound found round hound mound abound ground around rebound

What does “unsound” mean?

The word “unsound” means not structurally solid; weak or defective. In plain terms, weak or faulty — physically, mentally, or logically.

How do you pronounce “unsound”?

“Unsound” is pronounced uhn-SOWND (/ˌʌnˈsaʊnd/ in IPA).

How do you use “unsound” in a sentence?

Here is “unsound” used in a sentence: “Engineers condemned the bridge as structurally unsound.”

What is the opposite of “unsound”?

The opposite of “unsound” — its antonyms — is sound.

What part of speech is “unsound”?

“Unsound” is an adjective.

How many meanings does “unsound” have?

“Unsound” has 3 distinct senses listed in this dictionary. The most common is: not structurally solid; weak or defective.

go sound voice seem channel healthy volume bay