IPA: /dɪsəˈpɔɪntɪdli/
KK: /dɪsəˈpɔɪntɪdli/
In a way that shows sadness or displeasure about something that did not happen as expected.
She sighed disappointedly when she heard the news about the canceled concert.
Disappointedly → It is formed from "dis-" (meaning apart or away) and "appoint" (from Latin "appointare", meaning to set or place) and the suffix "-edly" (indicating manner). The word describes the manner of feeling set apart from expectations or hopes, leading to disappointment.
Think of feeling 'set apart' ('dis-') from what you hoped for ('appoint') — that's why disappointedly means feeling let down.