Meaning of the word extemporaneous in English

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

extemporaneous

US /ekˌstem.pəˈreɪ.ni.əs/
UK /ekˌstem.pəˈreɪ.ni.əs/

Adjective

1.

done or said without any preparation or thought:

Example:
an extemporaneous speech
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