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unsound

un·sound

unsound

 
pronunciation:
uhn saUnd
part of speech: adjective
definition 1: not solid, firm, or stable.
unsound wall supports
synonyms:
insecure, rickety, shaky, unstable, unsteady, weak
antonyms:
sound
similar words:
crumbling, decayed, decrepit, dilapidated, flimsy, precarious, rotten, unreliable, wobbly
definition 2: not firmly based on fact or reasoning; not true or logical; fallacious.
unsound ideas
synonyms:
fallacious, illogical, untenable
antonyms:
sound
similar words:
defective, faulty, flimsy, incorrect, invalid, irrational, precarious, shaky, specious, spurious, unbalanced, unfounded, weak
definition 3: not physically or mentally healthy or strong.
synonyms:
unstable
antonyms:
sound
similar words:
ailing, decrepit, demented, deranged, diseased, ill, infirm, sickly, unbalanced, unhealthy, weak
definition 4: not financially strong or secure.
an unsound investment
antonyms:
sound
similar words:
hazardous, ill-advised, imprudent, risky, unsteady, unwise
definition 5: of sleep, easily or often disturbed; light.
synonyms:
light
antonyms:
sound
similar words:
fitful, restless, uneasy
derivations: unsoundly (adv.), unsoundness (n.)