9 letters
- recontour14
- recrating15
- recursion14
- reraising12
- reroofing15
- rerouting13
- rescoring15
- resifting15
- resonator10
- resorting12
- restoring12
- retaining13
- retiarius10
- retracing15
- returning14
- reuniting14
- rigatonis12
- rogations12
- ruinating14
- ruination12
- runcinate15
- saturnine12
- scarifier15
- scrounger16
- sectoring15
- seriating12
- serotonin11
- serrating12
- serration10
- signature13
- signorina13
- signorine13
- sintering13
- sinuating14
- softening16
- sortieing12
- straining13
- stringier12
- suctorian14
- surfacing19
- surrogate12
- tenacious14
- terracing15
- tonsuring14
- torrifies12
- trainings13
- transonic14
- tricornes13
- trouncers14
- trouncing17
- truancies14
- unceasing17
- uncertain15
- uncoating17
- uncrating17
- unfairest14
- unroofing17
- unrooting14
- unseating14
- uraninite12
- urinaries11
- urinating14
- urination12