9 letters
- soberness13
- softeners13
- softening16
- sogginess14
- songfests15
- songsters12
- sonneteer11
- sorriness10
- sovereign16
- speerings15
- stereoing12
- sternness11
- sternsons11
- stoniness11
- stressing12
- synereses12
- syneresis12
- synergies14
- tenseness11
- tensioner11
- terseness10
- tigresses11
- unfreeing17
- veneering17
- vignerons17
- woenesses13
- worsening16
- wrongness16