15 letters
- reconsolidating24
- recontaminating26
- recrystallizing34
- refrangibleness26
- rehospitalizing33
- reincorporating25
- reinvestigating25
- remanufacturing30
- rematerializing31
- remythologizing37
- renationalizing30
- reorchestrating23
- rephotographing30
- republicanizing39
- restrengthening24
- resystematizing32
- revolutionising25
- revolutionizing34
- rumormongerings28
- sidesplittingly26
- silversmithings28
- sledgehammering30
- sociolinguistic26
- splenectomizing38
- sporangiophores26
- steeplechasings27
- straitjacketing34
- strikebreakings29
- strongyloidoses22
- strongyloidosis22
- structuralizing33
- subcategorizing36
- subspecializing38
- substantivizing36
- superconducting31
- supersaturating23
- telangiectasias22
- teleprocessings25
- theatricalizing33
- thunderstriking27
- transistorising19
- transistorizing28
- transliterating20
- transmogrifying29
- triangularities20
- troubleshooting25
- unaccommodating33
- unchallengeable31
- unchangeability31
- uncomplainingly34
- uncomprehending33
- underestimating24
- understandingly26
- undistinguished25
- unfeelingnesses25
- unforgivingness30
- unguardednesses23
- unprepossessing26
- unquestioningly34
- unwillingnesses26
- ventriloquizing43
- wappenschawings36
- weatherboarding27
- weatherproofing29
- weltanschauungs30
- whistleblowings31
- wrongheadedness26