IPA: /ɪmˈbærəsɪŋli/
KK: /ɪmˈbɛrəsɪŋli/
In a way that causes someone to feel awkward or ashamed.
She laughed embarrassingly when she tripped on stage.
Embarrassingly → It is formed from "embarrass" (from Spanish *embarazar*, meaning to hinder or obstruct) and the suffix "-ingly" (meaning in a manner of). The word "embarrassingly" means in a manner that causes hindrance or discomfort, often in a social context.
Think of feeling hindered or obstructed ('embarrass') in a social situation, and the '-ingly' shows how that feeling is expressed.