14 letters
- precipitancies27
- preconsonantal24
- predestinarian20
- predominancies26
- premanufacture29
- premillenarian24
- preoccupancies31
- preperformance30
- preponderances26
- preponderantly26
- proletarianise19
- proletarianize28
- propagandistic27
- propagandizers33
- propagandizing36
- prostaglandins23
- protohistorian20
- protolanguages24
- protoplanetary24
- pseudopregnant26
- psychoanalyses28
- psychoanalysis28
- psychoanalysts28
- psychoanalytic31
- psychoanalyzed38
- psychoanalyzes37
- quantification32
- quantitatively32
- randomizations29
- rearrangements21
- recalcitrances25
- recanalization29
- reconnaissance23
- rectangularity24
- refrangibility26
- reimplantation23
- remanufactured27
- remanufacturer26
- remanufactures26
- reorganization27
- republicanisms29
- republicanized36
- republicanizes35
- restauranteurs17
- retransferring21
- retransforming24
- retranslations17
- retransmission19
- retransmitting21
- sabermetrician24
- sanctification25
- sanguinenesses20
- sansculottisms23
- scandalmongers26
- scandalousness22
- sectarianizing30
- septuagenarian22
- servomechanism30
- sesquipedalian30
- significancies27
- simultaneities20
- simultaneously24
- slanderousness19
- solitudinarian19
- spokesmanships30
- sporangiophore25
- sportfisherman26
- sportsmanships26
- statesmanships23
- strandednesses18
- strangulations20
- stratovolcanos23
- subcutaneously27
- sublieutenants22
- submandibulars28
- substantiality22
- substantiating22
- substantiation20
- substantiative23
- substantivally27
- substantivized33
- substantivizes32
- subterraneanly23
- sulfanilamides25
- superabundance28
- superannuating24
- superannuation22
- superhumanness26
- superorganisms24
- supplantations24
- swordsmanships27
- sycophantishly30
- talismanically26
- tangiblenesses22
- telangiectases21
- telangiectasia21
- telangiectasis21
- telangiectatic24
- televangelisms26
- televangelists23
- thanatological24
- thanatologists20
- thankfulnesses27
- thermoremanent24
- tranquillities27
- tranquillizers36
- tranquillizing39
- tranquilnesses27
- transamination20
- transcendences24
- transcendental22
- transcendently24
- transcriptases21
- transcriptions22
- transcutaneous21
- transductional22
- transferential20
- transformation22
- transformative25
- transgressions18
- transistorised16
- transistorises15
- transistorized25
- transistorizes24
- transitionally20
- transitiveness20
- transitivities19
- transitoriness16
- transliterated17
- transliterates16
- translocations20
- translucencies24
- transmigrating23
- transmigration21
- transmigrators20
- transmigratory22
- transmissivity24
- transmittances22
- transmogrified24
- transmogrifies23
- transmutations20
- transparencies22
- transparentize28
- transpirations19
- transplacental24
- transplantable24
- transportation19
- transpositions19
- transsexualism27
- transsexuality26
- transshipments24
- transvaluating24
- transvaluation22
- triangulations20
- trihalomethane23
- tyrannicalness23
- ultradistances21
- ultramontanism24
- unanesthetized29
- unchangingness28
- understandable23
- understandably25
- understandings22
- uniformitarian23
- unmannerliness23
- unpleasantness22
- unquantifiable34
- unromantically27
- unromanticized33
- unstandardized29
- untranslatable22
- upstandingness24
- urbanistically26
- utilitarianism20
- valedictorians24
- valetudinarian23
- vandalizations31
- vegetarianisms24
- volcanological30
- volcanologists26
- vulcanisations25
- vulcanizations34
- vulcanologists27
- weltanschauung29
- womanishnesses24