| Word | Definitions | Synonyms |
|---|---|---|
| riff | (noun) a jazz ostinato; usually provides a background for a solo improvisation | - |
| riffle | (noun) shuffling by splitting the pack and interweaving the two halves at their corners | - |
| (noun) a small wave on the surface of a liquid | Synonyms: ripple, rippling, wavelet | |
| riffraff | (noun) disparaging terms for the common people | Synonyms: rabble, ragtag, ragtag and bobtail |