14 letters
- strikebreakers25
- subatmospheric29
- subgenerations22
- subgovernments29
- subliteratures20
- subserviencies26
- subterraneanly23
- subtherapeutic27
- subversiveness27
- sufferableness26
- summersaulting26
- superabounding27
- superabsorbent25
- superabundance28
- superachievers27
- superadditions21
- superambitious25
- superannuating24
- superannuation22
- supercalenders24
- superciliously26
- supercivilized36
- supercolliders24
- supercomputers28
- superconducted28
- superconductor27
- superconfident27
- supercontinent24
- supercriminals26
- superdiplomats26
- supereffective31
- superefficient28
- superelevating26
- superelevation24
- supereminences26
- supereminently26
- superenciphers27
- supererogation21
- supererogatory22
- superexpensive33
- superexpresses28
- superfetations22
- superficiality27
- supergravities24
- superhardening25
- superhumanness26
- superimposable28
- superincumbent30
- superinduction25
- superinfecting28
- superinfection26
- superinsulated22
- superintendent22
- superintending24
- superintensity22
- superlobbyists27
- superloyalists22
- superluxurious29
- supermasculine27
- superministers22
- supernaturally24
- supernormality25
- supernutrition21
- superorganisms24
- superovulating27
- superovulation25
- superpatriotic24
- superphenomena28
- superphosphate28
- superpositions22
- superqualities29
- supersaturated20
- supersaturates19
- superscription25
- supersecrecies24
- supersensitive23
- supersexuality29
- supersonically26
- superspectacle28
- superstimulate23
- superstrengths23
- superstructure23
- supersymmetric29
- superthrillers22
- supervirtuosos23
- sweaterdresses18
- tatterdemalion20
- teleconference26
- teletypewriter23
- tenderizations26
- teratogenicity22
- tercentenaries19
- tercentennials21
- terephthalates22
- tergiversating23
- tergiversation21
- tergiversators20
- terminableness23
- terminological25
- terriblenesses19
- territorialism18
- territorialist15
- territoriality17
- territorialize24
- terrorizations24
- thermalization30
- thermochemical31
- thermochemists27
- thermodynamics29
- thermoelectric26
- thermoelements24
- thermoformable29
- thermographies26
- thermojunction34
- thermolability26
- thermomagnetic28
- thermoplastics26
- thermoreceptor25
- thermoregulate23
- thermoremanent24
- thermostatting22
- thermotropisms25
- thimbleberries26
- thimbleriggers27
- thimblerigging30
- thundershowers24
- thunderstrikes23
- thunderstrokes23
- tigerishnesses19
- togethernesses19
- tolerabilities19
- tranquillizers36
- transferential20
- transliterated17
- transliterates16
- treasurerships20
- triliteralisms19
- troubleshooter21
- turbogenerator21
- turbomachinery29
- ultraenergetic22
- ultramodernist21
- unalterability23
- uncomputerized36
- undecipherable29
- underachievers26
- underachieving29
- undercarriages22
- underclothings26
- underdeveloped27
- underemphasize34
- underestimated21
- underestimates20
- underexposures28
- undergraduates21
- undergrounders22
- underinflation23
- undernourished22
- undernutrition20
- underpaintings24
- underpopulated26
- underqualified32
- underreporting23
- undersaturated19
- undersecretary22
- understaffings26
- understandable23
- understandably25
- understandings22
- understatement21
- understrappers23
- underthrusting23
- underutilizing31
- undervaluation24
- undeterminable25
- undiscoverable28
- unenterprising23
- unflatteringly26
- ungenerosities19
- unhysterically27
- universalistic24
- universalities21
- universalizing33
- unmannerliness23
- unrefrigerated22
- unregenerately22
- unreservedness22
- venerabilities23
- verbalizations32
- verbigerations24
- veridicalities23
- verifiableness26
- verisimilitude24
- vermiculations27
- vernacularisms27
- vernalizations30
- versifications25
- verticalnesses23
- videorecorders23
- vituperatively29