IPA: /ˈdɪfɪdəntli/
KK: /ˈdɪfɪdəntli/
In a way that shows a lack of self-confidence or shyness.
She spoke diffidently during the meeting, unsure of her ideas.
Diffidently → It is formed from "diffidere" (meaning to distrust or lack confidence) and the adverbial suffix "-ly" (meaning in a manner of). The word "diffidently" means in a manner that shows a lack of self-confidence or trust in oneself.
Think of someone who is lacking confidence ('diffidere') and acting in a way that shows their uncertainty — that's what diffidently means.