| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Resonance Frequency | 19 | 12 | 7 | 7 |
| Resonant | 8 | 5 | 3 | 3 |
| Resonating | 10 | 6 | 4 | 4 |
| Resounding | 10 | 6 | 4 | 3 |
| Retroflex | 9 | 6 | 3 | 3 |
| Reverberance | 12 | 7 | 5 | 4 |
| Reverberating | 13 | 8 | 5 | 5 |
| Reverberative | 13 | 7 | 6 | 5 |
| Richness | 8 | 6 | 2 | 2 |
| Ring | 4 | 3 | 1 | 1 |
| Ringing | 7 | 5 | 2 | 2 |
| Roaring | 7 | 4 | 3 | 2 |
| Roll | 4 | 3 | 1 | 1 |
| Rolling | 7 | 5 | 2 | 2 |
| Rotund | 6 | 4 | 2 | 2 |
| Round | 5 | 3 | 2 | 1 |
| Sailing | 7 | 4 | 3 | 2 |
| Sailplaning | 11 | 7 | 4 | 3 |
| Saturation | 10 | 5 | 5 | 4 |
| Segmental Phoneme | 17 | 11 | 6 | 6 |
| Semivowel | 9 | 5 | 4 | 4 |
| Slammer | 7 | 5 | 2 | 2 |
| Soaring | 7 | 4 | 3 | 2 |
| Sonant | 6 | 4 | 2 | 2 |
| Sonority | 8 | 5 | 3 | 4 |
| Sonorous | 8 | 4 | 4 | 3 |
| Sonorousness | 12 | 7 | 5 | 4 |
| Sound | 5 | 3 | 2 | 1 |
| Sounding | 8 | 5 | 3 | 2 |
| Speech Sound | 12 | 8 | 4 | 2 |
| Spoken Word | 11 | 8 | 3 | 3 |
| Stentoraphonic | 14 | 9 | 5 | 5 |
| Stentorian | 10 | 6 | 4 | 4 |
| Stentorious | 11 | 6 | 5 | 4 |
| Stop | 4 | 3 | 1 | 1 |

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