IPA: /dɪˈkɔːrəsli/
KK: /dɪˈkɔrəsli/
In a way that is proper, polite, and respectful, following social norms or conventions.
She spoke decorously at the formal dinner, making sure to follow all the etiquette rules.
Decorously → It is formed from "decorus" (from Latin, meaning proper or seemly) and the adverbial suffix "-ly" (meaning in a manner of). The word "decorously" means in a proper or seemly manner.
Think of behaving in a 'proper' way ('decorus') — that's why decorously means to act in a proper manner.