9 letters
- regresses11
- regressor11
- regretful16
- regretted12
- regretter11
- regroomed15
- regrooved16
- regrooves15
- regrouped16
- regrowing17
- regrowths16
- renograms15
- reprogram17
- scalogram18
- segregant14
- segregate13
- semigroup18
- serigraph16
- sgraffiti17
- sgraffito17
- shagreens14
- skiagrams18
- sociogram17
- sonograms15
- stingrays14
- subgrades16
- subgraphs20
- subgroups19
- telegrams15
- telegraph17
- tigresses11
- tomograms17
- trigraphs16
- typograph21
- undergrad15
- ungrouped18
- upgrading19
- upgrowing21
- upgrowths20
- vagrantly19
- venograms19
- verdigris16
- xenograft22
- xylograph26
- zymograms28