IPA: /əˈfɛktɪdli/
KK: /əˈfɛktɪdli/
In a way that shows artificiality or pretentiousness, often to impress others.
She spoke affectedly, trying to impress everyone with her knowledge.
Affectedly → It is formed from "affected" (from Latin "affectare", meaning to influence or have an effect on) and "-ly" (meaning in a manner of). The word "affectedly" means in a manner that shows an influence or pretense, often in a way that is not genuine.
Think of someone acting in a way that shows they are 'influenced' ('affectare') by something, and the '-ly' indicates how they are doing it — that's why affectedly means to act in a pretentious manner.