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had been riffing
  • past perfect progressive of riff.

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