1) ADJ-GRADED: usu v-link ADJ If a conclusion or method is unsound, it is based on ideas that are wrong.

The thinking is good-hearted, but muddled and fundamentally unsound...

The national tests were educationally unsound.

2) ADJ-GRADED If something or someone is unsound, they are unreliable.

No sensible person would put his money in a bank he knew to be unsound.

3) ADJ-GRADED: usu v-link ADJ, usu adv ADJ If you say that something is unsound in some way, you mean that it is damaging in that way or to the thing mentioned.

The project is environmentally unsound...

A diet extremely low in calories can also be a diet that is nutritionally unsound.

4) ADJ-GRADED: usu v-link ADJ If a building or other structure is unsound, it is in poor condition and is likely to collapse.

The church was structurally unsound.

English dictionary. 2008.


Look at other dictionaries:

  • unsound — un·sound /ˌən sau̇nd/ adj: 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 …   Law dictionary

  • Unsound — Un*sound , a. Not sound; not whole; not solid; defective; infirm; diseased. [1913 Webster] {Un*sound ly}, adv. {Un*sound ness}, n. [1913 Webster] …   The Collaborative International Dictionary of English

  • unsound — early 14c., of persons, diseased, wounded, from UN (Cf. un ) (1) not + SOUND (Cf. sound) (adj.). Cf. M.L.G. unsund, M.Du. ongesont, Ger. ungesund. Meaning morally corrupt is recorded from c.1300; that of not mentally healthy is from 1540s. Sense… …   Etymology dictionary

  • unsound — [adj] not well; flimsy ailing, crazed, dangerous, decrepit, defective, delicate, demented, deranged, diseased, erroneous, fallacious, false, faulty, flawed, fragile, frail, ill, illogical, inaccurate, incongruous, incorrect, infirm, in poor… …   New thesaurus

  • unsound — ► ADJECTIVE 1) not safe or robust; in poor condition. 2) not based on sound evidence or reasoning; unreliable or unacceptable. DERIVATIVES unsoundness noun …   English terms dictionary

  • unsound — [un sound′] adj. not sound or free from defect; specif., a) not normal or healthy physically or mentally b) not safe, firm, or solid; insecure c) not safe and secure financially d) not based on truth or valid reasoning; not accurate, reliable,… …   English World dictionary

  • unsound — un|sound [ˌʌnˈsaund] adj 1.) not based on facts or good reasons ideologically/scientifically/ecologically etc unsound ▪ a test that s scientifically unsound 2.) an unsound building or structure is in bad condition ▪ The houses are structurally… …   Dictionary of contemporary English

  • unsound — un|sound [ ,ʌn saund ] adjective 1. ) not based on sensible ideas: unsound reasoning 2. ) not safe: environmentally unsound conditions buildings that are structurally unsound a ) used about things that involve a lot of risk: unsound investments… …   Usage of the words and phrases in modern English

  • unsound — UK [ʌnˈsaʊnd] / US [ˌʌnˈsaʊnd] adjective 1) a) not safe environmentally unsound conditions buildings that are structurally unsound b) used about things that involve a lot of risk unsound investments 2) not based on sensible ideas unsound… …   English dictionary

  • unsound — adjective Date: 14th century not sound: 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 …   New Collegiate Dictionary

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