extemporaneous

6 synonyms and 4 antonyms for extemporaneous, grouped by meaning and by how common each one is.

Adj — Done without proper preparation or planning; off-the-cuff.

Synonyms

Precise, but they will stand out — check the sense before using one.

extemporary offhand extempore impromptu unrehearsed offhanded

prepared rehearsed studied premeditated

Came into English from Late Latin extemporāneus, itself from Latin ex tempore (“impromptu”).

prepared studied impromptu premeditated offhand rehearsed