riff

verb

/rɪf/

[intransitive]

Verb Forms

present simple I / you / we / they riff	/rɪf/ /rɪf/
he / she / it riffs	/rɪfs/ /rɪfs/
past simple riffed	/rɪft/ /rɪft/
past participle riffed	/rɪft/ /rɪft/
-ing form riffing	/ˈrɪfɪŋ/ /ˈrɪfɪŋ/

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to play a short repeated pattern of notes in popular music or jazz（流行音乐或爵士乐的）重复段
- riffing guitars即兴演奏吉他
riff (on something) to perform a monologue (= long speech by one person) on a particular subject, especially a funny one that you make up as you are speaking即兴：在一个特定主题上进行独白，尤其是您在讲话时做的一个有趣的主题
- Most comedians can riff on politics.大多数喜剧演员都会即兴重复政治。

noun

/rɪf/

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a short repeated pattern of notes in popular music or jazz（流行音乐或爵士乐的）重复段
- a guitar riff吉他重复乐段
Oxford Collocations Dictionary
Riff is used after these nouns:
guitar
rock
See full entry
riff (on something) a monologue (= long speech by one person) on a particular subject, especially a funny one that you make up as you are speaking即兴：关于一个特定主题的独白，尤其是您在讲话时编成的一个有趣的主题
- He launched into an extended riff on the pitfalls of contemporary romance.他滔滔不绝地讲述当代浪漫的陷阱。

Word Origin1930s: abbreviation of the noun riffle.