Exclamatory determiner

/ɛksklˈamətəɹˌi dɪtˈɜːmɪnə/

/ɛksklˈæmətˌoːɹi dɪtˈɜːmɪnɚ/

a type of determiner that expresses surprise, emphasis, or strong emotion, typically modifying a noun phrase to convey an exclamatory meaning, such as "what," "such," or "what a"