peroratory
/ˌpɛrɪˈɔːtəri/ or /ˌpɛroʊˈrætɔri/Definitions
1. noun
A speech or declaration, especially one made in an official or formal setting.
“The peroratory address by the new president calmed the anxious crowd.”
2. adjective
Used to describe something that is elaborate or impressive in style or language.
“The peroratory language used in the opera was breathtakingly beautiful.”