has been riffing
Present perfect progressivehe/sheconjugation ofriff.

riff

US
SpanishDictionary.com Phonetic Alphabet (SPA)
rihf
International Phonetic Alphabet (IPA)
ɹɪf
English Alphabet (ABC)
riff
UK
SpanishDictionary.com Phonetic Alphabet (SPA)
rihf
International Phonetic Alphabet (IPA)
ɹɪf
English Alphabet (ABC)
riff
Learn more about pronunciation and the English alphabet.
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