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