Uncertain unreliable unsafe Wrong untrustworthy undependable treacherous untrue questionable traitorous shaky disloyal unfaithful fickle inconstant dodgy perfidious problematic faithless uncertain Uncertain lying doubtful dishonest problematical hazardous deceitful debatable unsound suspect mendacious risky shady untruthful fishy disputable recreant untried unconfirmed doubtable See F... https://www.nutritionsly.com/chemical-intellectual-property-support-protecting-innovations-in-the-chemical-industry/