13 letters
- sectionalisms21
- seductiveness23
- selectionists18
- selectiveness22
- selectivities21
- semiconductor25
- solifluctions23
- spectacularly27
- spectatorship24
- spectinomycin29
- spectrographs26
- spectrography28
- spectrometers22
- spectrometric25
- spectroscopes25
- spectroscopic28
- splenectomies24
- splenectomize33
- structuralism22
- structuralist19
- structuralize28
- structuration19
- structureless19
- stupefactions24
- subcollection26
- subcontracted25
- subcontractor24
- subdistricted22
- subjectivised34
- subjectivises33
- subjectivisms36
- subjectivists33
- subjectivized43
- subjectivizes42
- substructural23
- substructures22
- superactivity26
- superconducts26
- superinfected25
- sympathectomy31
- syndactylisms26
- syntactically26
- tactfulnesses22
- thymectomized36
- thymectomizes35
- thyroidectomy26
- tonsillectomy24
- tractableness21
- transactinide19
- transactional19
- transductants20
- transductions20
- transfections21
- triboelectric23
- trisoctahedra19
- turboelectric24
- uncollectible27
- unconstricted23
- unconstructed24
- uncorrectable25
- underactivity25
- underreacting22
- undialectical24
- undoctrinaire20
- unelectrified23
- uninstructive24
- unpicturesque32
- unpredictable26
- unpredictably28
- unpunctuality27
- unrespectable25
- unselectively26
- unspectacular26
- valedictorian23
- valedictories22
- vasectomizing35
- venipunctures27
- victimization33
- victimologies26
- victimologist26
- vivisectional26
- zygodactylous34