unsound Synonyms

unfit bad fallacious unstable reasonless unfirm unfounded unreasonable unreasoned unreliable uncollectible unsubstantial untrue untruthful unwell unadvised tottery rickety risky rotten shaky sick sickened sickly sophistic sophistical specious spurious tenuous tottering valetudinarian valetudinary unverified chancy damaged unsupported ill-founded untenable unproven unsafe wobbly uncorroborated unreproducible unscientific unproved misguided weak weakly wild-cat wrong