had been riffing
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past perfect progressiveof riff.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
riffnouna melodic phrase, often constantly repeated, forming an accompaniment or part of an accompaniment for a soloist.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Unfortunately, some other childhoods got in the way, Kutcher revealed Thursday in an interview with Cheddar News, where he had been riffing on cryptocurrency.
From Los Angeles Times ● Jul. 16, 2021
He was looking to accompany a unique rhythm track that Campbell had been riffing on.
From Los Angeles Times ● Jul. 18, 2014