← BackshareGuessundoubting/ʌnˈdaʊtɪŋ/adjectiveHaving no doubts; completely trusting or confident.He remained undoubting even when others questioned his plan.Her undoubting faith in her friend never wavered.The child looked at his father with undoubting trust.SynonymsconfidenttrustingAntonymsskepticaldoubtful