unsound
- adjective (adj)
Meaning: not well flimsy
Synonyms:
ailing
crazed
dangerous
decrepit
defective
delicate
demented
deranged
diseased
erroneous
fallacious
false
faulty
flawed
fragile
frail
ill
illogical
inaccurate
incongruous
incorrect
infirm
in poor health
insane
insecure
insubstantial
invalid
lunatic
mad
not solid
rickety
shaky
specious
tottering
unbacked
unbalanced
unhealthy
unhinged
unreliable
unsafe
unstable
unsteady
unsubstantial
unwell
weak
wobbly
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.