| Answer | Crossword Clue |
|---|---|
| PHONO | Sound (prefix) |
| SONI | Sound: Prefix |
| PHON | Sound: Prefix. |
| PHONO | Sound prefix. |
| SONO | Sound: Prefix. |
| SONO | Sound: Prefix |
| PHON | Sound: Prefix |
| PHONO | Sound: Prefix |
| SONO | Sound: prefix |
| ULTRA | Prefix with sound |
| SONO | Sound-related prefix |
| INFRA | Prefix with sound |
| ULTRA | Prefix with light or sound |
| INFRA | Prefix with "red" or "sound" |
| INFRA | Prefix with "sound" and "red" |
