14 letters
- pseudomorphous28
- pseudoscorpion26
- reapportioning24
- rechoreographs26
- recommendatory27
- reconciliatory24
- reconstructors22
- reexportations25
- reflectorizing33
- reforestations18
- reformulations23
- refractoriness21
- rehabilitators20
- reimportations21
- reincorporated22
- reincorporates21
- reinforcements25
- reinvigorating24
- reinvigoration22
- reinvigorators21
- remorsefulness23
- reorchestrated20
- reorchestrates19
- reorganization27
- reorientations16
- retransforming24
- retroreflector21
- revalorization29
- rigorousnesses18
- roadworthiness21
- rumormongering27
- rutherfordiums25
- satisfactorily23
- scornfulnesses24
- semiconductors26
- semiporcelains25
- shortsightedly24
- socioreligious21
- solicitorships23
- sonorousnesses17
- spatiotemporal24
- spectatorships25
- spermatophores25
- sporangiophore25
- sporopollenins24
- sporotrichoses22
- sporotrichosis22
- sportfisherman26
- sportfishermen26
- sportfulnesses23
- sportivenesses22
- sportscastings23
- sportsmanships26
- sportswritings23
- stubbornnesses23
- subcategorized33
- subcategorizes32
- subcontractors25
- subnormalities23
- subordinations21
- superabsorbent25
- superconductor27
- supererogatory22
- supernormality25
- superorganisms24
- supportability27
- supportiveness26
- swordsmanships27
- teleportations19
- temporizations30
- tergiversators20
- territorialism18
- territorialist15
- territoriality17
- territorialize24
- terrorizations24
- tetrachlorides21
- tetrafluorides20
- thenceforwards27
- thermoformable29
- thermoreceptor25
- thermoregulate23
- thermoremanent24
- thoroughbasses24
- thoroughbraces27
- thoroughnesses22
- timorousnesses19
- tortoiseshells18
- tortuousnesses17
- transformation22
- transformative25
- transistorised16
- transistorises15
- transistorized25
- transistorizes24
- transitoriness16
- transmigrators20
- transmigratory22
- transportation19
- tumorigenicity26
- turbogenerator21
- ultraglamorous23
- unconformities26
- uncontemporary28
- uncorroborated23
- underreporting23
- uniformitarian23
- unincorporated24
- unsatisfactory24
- unworthinesses22
- urediniospores20
- uxoriousnesses24
- vaingloriously26
- valedictorians24
- vaporishnesses24
- vaporousnesses23
- victoriousness23
- videorecorders23
- vigorousnesses22
- watercolorists21
- whortleberries23
- wordlessnesses20
- wordsmitheries23
- workablenesses26
- worklessnesses23
- worshipfulness28
- worthwhileness26