ex·tem·po·rize

verb

/ɪkˈstempəraɪz/

(British English also extemporise)

[intransitive, transitive] (formal)

Verb Forms

present simple I / you / we / they extemporize	/ɪkˈstempəraɪz/ /ɪkˈstempəraɪz/
he / she / it extemporizes	/ɪkˈstempəraɪzɪz/ /ɪkˈstempəraɪzɪz/
past simple extemporized	/ɪkˈstempəraɪzd/ /ɪkˈstempəraɪzd/
past participle extemporized	/ɪkˈstempəraɪzd/ /ɪkˈstempəraɪzd/
-ing form extemporizing	/ɪkˈstempəraɪzɪŋ/ /ɪkˈstempəraɪzɪŋ/

to speak or perform without preparing or practising即席发言；即兴表演 synonym improvise
- She extemporized at the piano.她即兴弹奏钢琴。
- extemporize something The King then asked Bach to extemporize a six-part fugue.国王随后要求巴赫即兴创作一首六声部赋格曲。