Synonyms for unsound
- adjective
Synonyms by meaning
Adjective
1. Invalid
invalid, rotten, wrong, erroneous, unfit, bad, incorrect, risky, defective, false, unwholesome, imperfect, untrue, faulty, inaccurate
2. Weak
weak, unhealthy, unstable, mentally ill, insane, unreliable, infirm, diseased, shaky, treacherous, sickly, weakly, unsafe, feeble, flimsy, rickety, unwell, ailing
3. Fallacious
Definitions
- adj. 1
Not sound Not whole, not solid, defective.
- adj. 2
Not sound Infirm, diseased.
- adj. 3
Not sound Not good, unreliable.
Related words
- Word family
- unsoundness
Example sentences
- incorrect This book is now considered politically incorrect.
- invalid From tomorrow this email address will be invalid.
- unfit All those products are unfit for human consumption.
- erroneous He thought he could get away with his erroneous sentence.
- unstable Back in the 1990s, Algeria was incredibly unstable.
- unhealthy If you don’t do more exercise, you’ll be unhealthy.
By length
- 3 letters
- bad1
- 4 letters
- weak1
- 5 letters
- wrong1, false1, risky2, unfit2, shaky2
- 6 letters
- insane2, rotten2, unsafe2, faulty2, untrue2, morbid2, weakly2, feeble2, flimsy2, unwell2, ailing2, sickly2, infirm2
- 7 letters
- invalid3, decayed2, rickety3
- 8 letters
- unstable3, impaired2, diseased2
- 9 letters
- incorrect3, unhealthy3, defective3, imperfect3, erroneous4, illogical4, untenable4, heretical4, heterodox4
- 10 letters
- inaccurate4, unreliable5, fallacious3
- 11 letters
- treacherous3, unwholesome
- 12 letters
- undependable
The small number after each word is its number of syllables (risky2 = 2 syllables).