unsound

unsound
I
(New American Roget's College Thesaurus)
adj. unhealthy, diseased, sickly; deranged, unbalanced, unsettled; invalid, unreliable; untrue, incorrect, faulty, imperfect, illogical; decayed. See disease, error, imperfection.
II
(Roget's IV) modif.
1. [False]
Syn. ill-founded, erroneous, incongruous; see false 2 , illogical .
2. [Insecure]
Syn. unreliable, unbacked, weak; see unstable 2 .
III
(Roget's 3 Superthesaurus) a.
1. unhealthy unwell, sickly, ill, ailing, infirm, afflicted, diseased, abnormal, insane, crazy, psychotic, *psycho.
2. unsafe insecure, unstable, flimsy, shaky, unsteady, unreliable, dangerous, perilous, hazardous, rickety.
3. inaccurate unreliable, untruthful, erroneous, invalid, irrational, weak, groundless, illogical, fallacious.
ANT.: 1. healthy, fit, normal. 2. safe, solid, stable, secure. 3. accurate, valid, true, reliable
IV
(Roget's Thesaurus II) adjective 1. Not physically strong: decrepit, delicate, feeble, flimsy, fragile, frail, infirm, insubstantial, puny, unsubstantial, weak, weakly. See STRONG. 2. Afflicted with or exhibiting irrationality and mental unsoundness: brainsick, crazy, daft, demented, disordered, distraught, dotty, insane, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, wrong. Informal: bonkers, cracked, daffy, gaga, loony. Slang: bananas, batty, buggy, cuckoo, fruity, loco, nuts, nutty, screwy, wacky. Chiefly British: crackers. Law: non compos mentis. Idioms: around the bend, crazy as a loon, mad as a hatter, not all there, nutty as a fruitcake, off (or out of) one's head, off one's rocker, of unsound mind, out of one's mind, sick in the head, stark raving mad. See SANE. 3. Containing fundamental errors in reasoning: fallacious, false, illogical, invalid, sophistic, specious, spurious. See CORRECT, TRUE. 4. Containing an error or errors: erroneous, fallacious, false, inaccurate, incorrect, mistaken, off, untrue, wrong. Idioms: all wet, in error, off base, off (or wide of) the mark. See CORRECT. 5. Not wise: ill-advised, ill-considered, impolitic, imprudent, indiscreet, injudicious, unwise. See WISE.

English dictionary for students. 2013.

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Synonyms:
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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 — [[t]ʌ̱nsa͟ʊnd[/t]] 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. Ant …   English 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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