Not in good condition; damaged or decayed.

Roget 651: imperfect; not perfect etc. 650; deficient, defective; faulty, unsound, tainted; out of order, out of tune; cracked, leaky; sprung; warped etc. (distort) 243; lame; injured etc. (deteriorated) 659; peccant etc. (bad) 649; frail etc. (weak) 160; inadequate etc. (insufficient) 640; crude etc. (unprepared) 674; incomplete etc. 53; found wanting; below par; short-handed; below its full strength, under its full strength, below its full complement.    indifferent, middling, ordinary, mediocre; average etc. 29; so-so; coucicouci, milk and water; tolerable, fair, passable; pretty well, pretty good; rather good, moderately good; good; good enough, well enough, adequate; decent; not bad, not amiss; inobjectionable^†, unobjectionable, admissible, bearable, only better than nothing.    secondary, inferior; second-rate, second-best; one-horse [U.S.].    ... meer laten zien

Roget 655: diseased; ailing etc. v.; ill, ill of; taken ill, seized with; indisposed, unwell, sick, squeamish, poorly, seedy; affected with illness, afflicted with illness; laid up, confined, bedridden, invalided, in hospital, on the sick list; out of health, out of sorts; under the weather [U.S.]; valetudinary^†.    unsound, unhealthy; sickly, morbid, morbose^†, healthless^†, infirm, chlorotic [Med.], unbraced^†.    drooping, flagging, lame, crippled, halting.    morbid, tainted, vitiated, peccant, contaminated, poisoned, tabid^†, mangy, leprous, cankered; rotten, rotten to the core, rotten at the core; withered, palsied, paralytic; dyspeptic; luetic^†, pneumonic, pulmonic [Med.], phthisic^†, rachitic; syntectic^†, syntectical^†; tabetic^†, varicose.    touched in the wind, broken-winded, spavined, gasping; hors de combat etc. (useless) 645 [Fr.].    weakly, weakened etc. (weak) 160; decrepit; decayed etc. (deteriorated) 659; incurable etc. (hopeless) 859; in declining health; cranky; in a bad way, in danger, prostrate; moribund etc. (death) 360.    morbific etc. 657^†; epidemic, endemic; zymotic^†.    ... meer laten zien

Roget 545: deceived etc. v.; deceiving &c.; cunning etc. 702; prestigious^†, prestigiatory^†; deceptive, deceptious^†; deceitful, covinous^†; delusive, delusory; illusive, illusory; elusive, insidious, ad captandum vulgus [Lat.].    untrue etc. 546; mock, sham, make-believe, counterfeit, snide [Slang], pseudo, spurious, supposititious, so-called, pretended, feigned, trumped up, bogus, scamped, fraudulent, tricky, factitious bastard; surreptitious, illegitimate, contraband, adulterated, sophisticated; unsound, rotten at the core; colorable; disguised; meretricious, tinsel, pinchbeck, plated; catchpenny; Brummagem.    artificial, synthetic, ersatz [G.]; simulated etc. 544.    ... meer laten zien

Not sound financially.

Containing or based on a fallacy:
— An unsound argument.

synoniem: fallacious.

Roget 495: erroneous, untrue, false, devoid of truth, fallacious, apocryphal, unreal, ungrounded, groundless; unsubstantial etc. 4; heretical etc. (heterodox) 984; unsound; illogical etc. 477.    inexact, unexact inaccurate^†, incorrect; indefinite etc. (uncertain) 475.    illusive, illusory; delusive; mock, ideal etc. (imaginary) 515; spurious etc. 545; deceitful etc. 544; perverted.    controvertible, unsustainable; unauthenticated, untrustworthy.    exploded, refuted; discarded.    in error, under an error etc. n.; mistaken etc. v.; tripping etc. v.; out, out in one's reckoning; aberrant; beside the mark, wide of the mark, wide of the truth, way off, far off; astray etc. (at fault) 475; on a false scent, on the wrong scent; in the wrong box, outside the ballpark; at cross purposes, all in the wrong; all out.    ... meer laten zien

Roget 477: intuitive, instinctive, impulsive; independent of reason, anterior to reason; gratuitous, hazarded; unconnected.    unreasonable, illogical, false, unsound, invalid; unwarranted, not following; inconsequent, inconsequential; inconsistent; absonous^†, absonant^†; unscientific; untenable, inconclusive, incorrect; fallacious, fallible; groundless, unproved; non sequitur [Lat.], it does not follow.    deceptive, sophistical, jesuitical; illusive, illusory; specious, hollow, plausible, ad captandum [Lat.], evasive; irrelevant etc. 10.    weak, feeble, poor, flimsy, loose, vague.    irrational; nonsensical etc. (absurd) 497.    foolish etc. (imbecile) 499; frivolous, pettifogging, quibbling; finespun^†, overrefined^†.    at the end of one's tether, au bout de son latin.    ... meer laten zien

Suffering from severe mental illness:
— Of unsound mind.

synoniemen: mentally ill, unstable.

Physically unsound or diseased:
— An unsound limb.
— Unsound teeth.

synoniemen: bad, unfit.

Of e.g. advice.