14 letters
- nonjusticiable33
- nonmechanistic28
- nonmonetarists20
- nonobjectivist35
- nonresistances20
- nonrestrictive23
- nonspecialists23
- nonstatistical20
- northeastwards21
- northwestwards24
- novelistically27
- obstreperously24
- obstructionism25
- obstructionist22
- oligopsonistic24
- onomatologists21
- operationalist19
- opisthobranchs28
- oppositionists21
- optimistically27
- orchestrations20
- ornithologists20
- ostentatiously19
- osteoarthritic19
- osteoarthritis16
- osteosarcomata20
- overabstracted25
- overadjustment33
- overconstructs26
- overestimating24
- overestimation22
- overfastidious23
- overharvesting27
- overidealistic23
- overinvestment27
- overoptimistic27
- oversimplistic28
- overstatements22
- overstimulated24
- overstimulates23
- overstretching26
- overstructured24
- oystercatchers24
- pacifistically30
- paleobiologist24
- paleobotanists22
- paleoecologist24
- paleomagnetist24
- paleontologist22
- paleozoologist30
- pantisocratist21
- paralinguistic25
- parasitologist20
- particularists22
- pasteurization28
- pastoralnesses19
- pectinesterase21
- pedestrianisms22
- percussionists22
- perfectionists24
- pestilentially23
- petrochemistry27
- pharmacologist28
- phenomenalists25
- philanthropist26
- philhellenists25
- photobiologist25
- photochemistry29
- photogeologist24
- phraseologists22
- physostigmines27
- phytochemistry31
- planetologists22
- plasticization31
- plastoquinones30
- pleonastically26
- polytheistical26
- postadolescent23
- postamputation25
- postcapitalist24
- postcollegiate24
- postconception28
- postconvention27
- postcopulatory27
- postdebutantes23
- postdepression22
- posteriorities17
- posterolateral19
- postexperience31
- postganglionic27
- postgraduation22
- posthumousness25
- postindustrial21
- postliberation22
- postmastectomy28
- postmastership25
- postmenopausal26
- postmillennial25
- postmistresses20
- postmodernisms25
- postmodernists22
- postpositional22
- postpositively27
- postproduction26
- postpubescents28
- postretirement21
- posttensioning22
- preanesthetics23
- precapitalists24
- precombustions28
- preconstructed26
- predestinarian20
- predestinating22
- predestination20
- predestinators19
- preestablished24
- preestablishes23
- premenstrually26
- preposterously24
- preregistering22
- prerevisionist22
- presterilizing30
- prestructuring25
- priestlinesses19
- primatologists23
- procrastinated22
- procrastinates21
- procrastinator21
- progestational21
- prognosticated24
- prognosticates23
- prognosticator23
- progressivists23
- prohibitionist23
- projectionists30
- propagandistic27
- prostaglandins23
- prosthetically26
- prosthodontics24
- prosthodontist21
- protectionists21
- protohistorian20
- protohistories19
- protozoologist29
- provincialists26
- psychasthenias27
- psychasthenics30
- psychoacoustic31
- psychoanalysts28
- psycholinguist29
- pteridologists21
- quartermasters27
- questionnaires26
- radiobiologist21
- radiochemistry25
- radiostrontium20
- radiotherapist20
- rebroadcasting24
- reconstituting22
- reconstitution20
- reconstructing25
- reconstruction23
- reconstructive26
- reconstructors22
- recreationists18
- recrystallized31
- recrystallizes30
- redistillation18
- redistributing22
- redistribution20
- redistributive23
- reductionistic23
- reestablishing23
- reforestations18
- reinfestations19
- reinstallation18
- reinstatements19
- reinvestigated22
- reinvestigates21
- remonstrations19
- reorchestrated20
- reorchestrates19
- repristinating21
- repristination19
- repudiationist20
- reregistration17
- reservationist19
- resistlessness16
- restauranteurs17
- restimulations20
- restlessnesses16
- restrengthened21
- restrictionism21
- restrictionist18
- resystematized29
- resystematizes28
- retinoblastoma22
- reupholstering24
- revolutionists21
- rheumatologist23