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unsound

unsound

5 5.5
Not based on good evidence or clear reasons
  • adjective
  • /ʌnˈsaʊnd/
  • Formal
translation icon : erróneo
  • Generally, teacher-made assessments have been proven psychometrically unsound, which may indicate that they are not accurate indicators of student progress.
  • unsound arguments
  • unsound theory
  • scientifically unsound

Examples

  • The judge dismissed the case, stating that the arguments presented were clearly unsound.

  • Did she ever say that his legal advice was unsound?

  • Members of Congress knew the bill was constitutionally unsound, but did not stop themselves.

    Academic text (2002)
  • In this situation, the typical response is not simply to reject the argument as unsound.

    Academic text (2016)
  • The whole theory of modern education... is radically unsound.

  • Their conclusions may be unsound because design flaws confounded their methods.

    Academic text (1997)
  • Critics claimed that the emails revealed exaggerated climate-change predictions and others based on unsound calculations.

    Academic text (2010)
  • Much of the "music makes you smarter" literature is scientifically unsound, particularly the "Mozart effect" in its various guises.

    Academic text (2000)
  • Many scientists criticized the research as unsound due to its lack of empirical evidence.

  • His reasoning was deemed unsound after further examination revealed logical fallacies.

Synonyms

illogical
vsunsound
43 4.8

Does not make sense or follow clear reasons

concerns lack of valid reasoning or evidence rather than only not making sense
untenable
vsunsound
27 8.2

Impossible to defend against criticism

describes a position that is unreliable or faulty, not just indefensible
fallacious
vsunsound
  • Formal
13 8.3

Making people believe things that are not true

is broader, covering any unreliable or faulty basis or evidence

Antonyms

348 3.1

Accepted by law, by an official, or for good reason

62 4.5

Based on good reasons and likely to be correct

Idioms

1 9.0

Not able to think or decide clearly about important legal matters

How Sound

sound
62 4.5
reasonable
595 2.7
weak
290 1.6
flawed
182 3.7
unsound
  • Formal
5 5.5
fallacious
  • Formal
13 8.3

Surface Forms

unsound positive

Morphology

unsound = sound (transparent) = un + sound

Productive negation un- applied to 'sound' meaning 'valid/reliable', yielding 'not valid or reliable'.

Etymology

Unsound comes from un- 'not' and sound 'reliable' or 'solid'. So an unsound argument is one that is not solid or reliable, like a chair with a broken leg, and that is why it fails to convince people.