15 letters
- parasitizations28
- parasitological25
- parasitologists21
- parthenogenesis24
- particularising26
- pathophysiology32
- permissibleness26
- pervasivenesses27
- pessimistically28
- pharmacognosies29
- photosensitized31
- photosensitizer30
- photosensitizes30
- photosynthesize34
- physicochemical37
- physiographical33
- physiologically32
- physiopathology32
- physiotherapies27
- physiotherapist27
- plausiblenesses25
- posttransfusion24
- predispositions23
- prepositionally26
- prepresidential24
- preprofessional26
- prerevisionists23
- presuppositions26
- professionalism26
- professionalize32
- progressiveness25
- progressivistic27
- progressivities24
- prussianization30
- psychophysicist35
- psychosynthesis30
- purposivenesses27
- pusillanimities25
- pusillanimously29
- recessivenesses23
- reclusivenesses25
- recommissioning28
- reconsideration21
- recursivenesses24
- repulsivenesses25
- requisitenesses26
- resistibilities19
- resistivenesses20
- responsibleness24
- retransmissions20
- retrogressively24
- reversibilities23
- revolutionising25
- ribonucleosides25
- schistosomiasis23
- seclusivenesses25
- semisubmersible29
- sensitivenesses21
- seroconversions24
- sidesplittingly26
- sightlessnesses21
- sigmoidoscopies27
- silicifications26
- silversmithings28
- silviculturally30
- silviculturists26
- simplifications29
- sinterabilities20
- solipsistically26
- spermatogenesis24
- steeplechasings27
- steroidogenesis19
- strongyloidosis22
- subprofessional27
- superimposition26
- superparasitism25
- suppressibility28
- suppressiveness27
- telangiectasias22
- teleprocessings25
- tonsillectomies24
- transilluminate23
- transistorising19
- transistorizing28
- transpositional21
- trypanosomiasis24
- ultraprecisions24
- uncircumcisions31
- uncompassionate27
- uncontroversial26
- underemphasized36
- underemphasizes35
- undesirableness23
- unfossiliferous25
- unobtrusiveness26
- unprepossessing26
- unprofessionals25
- unsightlinesses23
- verisimilitudes25
- vicissitudinous26
- visionarinesses21
- whimsicalnesses28