Ada·gio : ə-ˈdä-j(ē-ˌ)ō
Used as an adjective, adverb, or noun.
Meaning "at a slow tempo"
The first use of adagio was seen in 1680, borrowed from the Italian phrase, Ad Agio, meaning "at ease". (source: Merriam-Webster)
Sentence Example: The third movements adagio expertly showcased the skill of the choral performers.