14 letters
- schoolteachers25
- seismographers24
- semiconductors26
- seroconversion23
- silversmithing27
- snippersnapper28
- sobersidedness20
- solicitorships23
- spectatorships25
- stationmasters18
- steeplechasers23
- strikebreakers25
- subcontractors25
- submandibulars28
- subversiveness27
- summersaulting26
- superachievers27
- supercalenders24
- supercolliders24
- supercomputers28
- superenciphers27
- superministers22
- supersaturated20
- supersaturates19
- superscription25
- supersecrecies24
- supersensitive23
- supersexuality29
- supersonically26
- superspectacle28
- superstimulate23
- superstrengths23
- superstructure23
- supersymmetric29
- superthrillers22
- tarsometatarsi17
- tergiversating23
- tergiversation21
- tergiversators20
- thimbleriggers27
- thundershowers24
- thunderstrikes23
- thunderstrokes23
- tranquillizers36
- transmigrators20
- treasurerships20
- underachievers26
- undergrounders22
- undersaturated19
- undersecretary22
- understaffings26
- understandable23
- understandably25
- understandings22
- understatement21
- understrappers23
- universalistic24
- universalities21
- universalizing33
- versifications25
- videorecorders23
- wafflestompers30
- weathercasters22
- weatherpersons23
- whippersnapper32
- whistleblowers27
- worshipfulness28
- zoogeographers32