Meaning of the word unrehearsed in English

What does unrehearsed mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

unrehearsed

US /ˌʌn.rɪˈhɝːst/
UK /ˌʌn.rɪˈhɜːst/

Adjective

not practiced or rehearsed

Example:
The speech was completely unrehearsed, but he delivered it perfectly.
Her reaction was completely unrehearsed and genuine.