Up for grabs are the uncommon 6-letter "S" words.
SABBAT
SABICU
SABINE
SABKHA KASBAH
SABLER BALERS BLARES, BLEARS
SAC BUT
SACHEM MACHES SAMECH SCHEMA
SADDHU
SAFROL FLORAS
SAGGAR RAGGAS
SAIMAN ANIMAS
SAITHE
SAIYID
SAJOUS
SALIFY
SALOOP
SALPID PLAIDS
SALVOR VALORS
SALWAR
SAMBAL BALSAM
SAMBAR
SAMEKH
SAMIEL EMAILS, MAILES MESIAL
SAMLET LAMEST METALS
SHAMUS SAMSHU
SANCTA TACANS
SANDHI DANISH
SANGHA
SANJAK
SANNOP
SANNUP UNSNAP
SANSAR SARANS
SANTIR INSTAR STRAIN TRAINS
SANTUR
SAPELE ASLEEP ELAPSE PLEASE
SAPOTA
SAPOTE
SARDAR RADARS
SARSAR
SARSEN SNARES
SATARA
SATCOM COMSAT MASCOT
SAUGHY
SAUREL
SAVATE
SAWLOG
SAWNEY
SAWYER SWAYER
SCARPH
SCHORL
SCHRIK CHIRKS KIRSCH
SCHROD CHORDS
SCHUIT TUCHIS
SCILLA
SCOLEX
SCOPAE
SCOUSE
SCRAWB
SCROOP
SCULCH
SCURFY
SCUTCH
SCUTUM
SCYPHI PHYSIC
SEABAG
SECERN CENSER SCREEN
SEGGAR AGGERS EGGARS GAGERS SAGGER
SEICHE
SELSYN
SEMEME
SENARY YEARS
SENHOR HERONS HONERS NOSHER
SENITI
SERVAL LAVERS RAVELS SALVER VELARS VERSAL
SHACKO
SHACKY
SHADUF
SHAICH
SHAIRD RADISH
SHAIRN ARSHIN
SHAMAL ALMAHS HALMAS HAMALS
SHAMBA
SHANDY
SHARNY
SHASTA
SHAVIE
SHAYKH
SHELTA HALES HASLET LATHES
SHIBAH
SHIKAR SHIKRA RAKISH
SHIRAZ
SHOCHU CHOUSH
SHORAN
SROFF
SHUMAI
SICCAN
SIDDHA SIDDHI
SIDDUR DRUIDS
SIFAKA
SIGLOI
SIGLUM
SIKSIK
SILENI
SILVAE VALISE
SILVEX VEXILS
SIMLIN
SIMONY MYOSIN
SIMOOM
SIMOON SOMONI
SIRDAR
SISKIN
SKATOL
SKEIGH
SKERRY
SKIBOB
SOLED
SLAHAL HALALS LAHALS
SLATCH
SLAVEY SYLVAE
SLEERY
SLUICY
SMALTI
SMILAX
SMRITI
SNEESH SHEENS
SOBFUL
SODDIE DIDOES DIODES
SOFFIT
SOPITE POTSIE POSTIE
SORDOR
SORGHO
SOUARI
SOVIET
SOVRAN
SPADIX
SPAHEE
SPARID RAPIDS
SPEEDO DEPOSE EPODES
SPELTZ
SPHYNX
SPINTO PINOTS PINTOS PISTON PITONS POINTS POSTIN
SPLAKE
SPRENT
SPRUCY CYPRUS
SQUAMA
SQUUSH
SRADHA
STACTE
STELLA SALLET
STEMMA
STEMMY
STEPPE
STILLY
STOLON
STOREY OYSTER TOYERS
STOTIN
STRATH
STREEL RELETS
STRIPT
STROWN
STYING STINGY
STYLAR
STYROX
SUBDEB SUBBED
SUBITO
SUDARY
SULCAL CALLUS
SULCUS
SULDAN
SUMACH
SUNDEW
SUNKET
SURIMI
SUSKIL
SUTEE TUEES
SVARAJ
SWARAJ
SWEENY WEENSY
SWEVEN
SWIPLE
\SWITHE WHITES WITHES
SYNCOM
SYNURA SUNRAY
SYPHER SYRINX
SYZYGY