13 letters
- psephological28
- psephologists24
- psychobiology31
- psychological30
- psychologised27
- psychologises26
- psychologisms29
- psychologists26
- psychologized36
- psychologizes35
- pteridologies20
- pteridologist20
- pyrocatechols27
- pyrolytically28
- radiobiologic23
- radiolabeling22
- radiolabelled21
- recollections22
- reconsolidate19
- reflexologies27
- remythologize32
- resolidifying23
- reupholstered21
- revolutionary22
- revolutionise20
- revolutionist20
- revolutionize29
- rheologically25
- roentgenology22
- scholasticate22
- scholasticism25
- schoolfellows27
- schoolmarmish27
- schoolmasters22
- schoolteacher24
- sedimentology23
- seismological23
- seismologists19
- selenological22
- selenologists18
- semasiologies19
- semipolitical24
- serologically23
- slaveholdings25
- smallholdings25
- snollygosters20
- sociolinguist21
- solarizations24
- solderability21
- solemnization28
- solicitations18
- solicitorship22
- solifluctions23
- soliloquising28
- soliloquizers34
- soliloquizing37
- solvabilities22
- somatological23
- soteriologies16
- speleological24
- speleologists20
- sporopollenin23
- steamrollered19
- stereological20
- stigmasterols19
- stoloniferous19
- strangleholds21
- stratovolcano22
- streptolysins20
- stromatolites17
- stromatolitic20
- subadolescent23
- subcollection26
- subcollegiate24
- supercollider23
- supercolossal22
- symbolization32
- sympatholytic29
- synecological26
- tautologously21
- technological26
- technologists22
- technologized32
- technologizes31
- teratological20
- teratologists16
- terminologies20
- tetrapyrroles19
- thanatologies19
- thanatologist19
- theologically25
- thiabendazole30
- throttleholds20
- topologically26
- torticollises18
- toxicological30
- toxicologists26
- trampolinings24
- trampolinists21
- triamcinolone22
- trichologists21
- trolleybusses21
- tropocollagen24
- typologically28
- ultraviolence24
- unapologizing33
- uncollectible27
- unideological23
- unmetabolized32
- unwholesomely27
- urbanologists21
- valpolicellas27
- ventrolateral20
- vexillologies29
- vexillologist29
- victimologies26
- victimologist26
- violabilities22
- violoncellist24
- virologically27
- volatilizable32
- volcanicities25
- volcanologies25
- volcanologist25
- volublenesses24
- voluntariness21
- voluntaristic23
- voluntaryisms25
- voluntaryists22
- volunteerisms23
- vulcanologies26
- vulcanologist26
- watercolorist20
- wholesomeness23
- wolfishnesses23
- wollastonites19
- woolgatherers21
- woolgathering24