IPA: /ˈtrʌstɪŋli/
KK: /ˈtrʌstɪŋli/
In a way that shows trust or confidence in someone or something.
She looked at him trustingly, believing he would keep his promise.
Trustingly → It is formed from "trust" (from Old Norse *traust*, meaning confidence or reliance) and "-ingly" (a suffix used to form adverbs indicating manner). The word "trustingly" means in a manner that shows confidence or reliance on someone or something.
Think of having 'confidence' ('trust') in someone and doing so 'in a manner' ('-ingly'). This helps you remember that 'trustingly' means to act with confidence.