16 letters
- overconstructing31
- overconsumptions32
- overcultivations30
- overelaborations25
- overexaggeration32
- overexpectations34
- overexploitation32
- overprescription30
- overproportioned28
- overspeculations29
- overstimulations26
- oversubscription31
- overutilizations32
- oxyphenbutazones45
- parameterization32
- parametrizations32
- paraprofessional27
- pardonablenesses26
- passionatenesses21
- periodontologies24
- personablenesses25
- personalizations31
- personifications27
- phenylketonurias31
- phenylketonurics34
- phonocardiograms31
- phonocardiograph33
- phonogrammically37
- phonographically36
- phosphatizations36
- phosphorylations30
- photocoagulation29
- photocomposition31
- photoduplication31
- photoexcitations32
- photoionizations32
- photoproductions30
- photorespiration25
- phrasemongerings30
- pictorialization33
- pleuropneumonias30
- politicalization34
- polycondensation29
- postdepositional25
- postpositionally27
- postresurrection24
- precancellations29
- precertification29
- predetermination25
- preformationists26
- preincorporation27
- premodifications30
- prenotifications27
- prequalification37
- preregistrations22
- prerevolutionary28
- preservationists24
- prestidigitation23
- presuppositional28
- procrastinations24
- professionalisms27
- professionalized34
- professionalizes33
- prognostications26
- pronounceability31
- pronunciamentoes29
- proselytizations32
- prussianizations31
- pseudonymousness29
- pyelonephritides29
- quadruplications36
- quantificational35
- questionableness32
- radioprotections24
- radiotelephonies24
- rationalizations28
- reaccreditations24
- reafforestations23
- reapportionments27
- reasonablenesses22
- reauthorizations29
- recapitalization33
- recentralization31
- recertifications26
- reclassification27
- reconcentrations25
- reconceptualized38
- reconceptualizes37
- reconfigurations27
- reconsiderations22
- recontaminations25
- recontextualized39
- recontextualizes38
- redeterminations22
- redistributional23
- refortifications26
- regionalizations30
- reincorporations24
- reinterpretation21
- reinvestigations24
- remilitarization30
- renormalizations31
- reorchestrations22
- reorganizational30
- representational22
- reprivatizations33
- requalifications34
- resocializations30
- resolidification25
- responsibilities24
- responsivenesses25
- resurrectionists21
- retransformation24
- retroreflections24
- revisualizations32
- romanticizations33
- saccharification31
- scandalmongering31
- seasonablenesses22
- semiabstractions26
- semicolonialisms28
- semiconservative31
- semiprofessional27
- sensationalising22
- sensationalistic22
- sensationalizing31
- septendecillions27
- seronegativities23
- sesquicarbonates33
- spiritualization31
- standardizations29
- stereophonically29
- strongyloidiases23
- strongyloidiasis23
- subconsciousness29
- subcontraoctaves31
- subjectivization46
- submitochondrial31
- suboptimizations36
- suborganizations33
- subprofessionals28
- substitutionally26
- suburbanizations35
- subvocalizations38
- superbillionaire26
- supercorporation27
- superfecundation30
- superimpositions27
- supermillionaire26
- superphenomenons31
- supersaturations22
- superspeculation29
- supplementations29
- supranationalism26
- supranationalist23
- supranationality25
- syllabifications30
- synchrocyclotron34
- synchronisations26
- synchronizations35
- systematizations31
- technicalization36
- teleconferencing31
- thermoregulation26
- thyrocalcitonins29
- tintinnabulation25
- tracheobronchial31
- traditionalistic22
- traditionalizing31
- transcontinental24
- transcriptionist24
- transfigurations24
- transformational25
- transliterations19
- transnationalism23
- transplantations23
- transportational22
- triiodothyronine23
- ultrafiltrations23
- ultramarathoners24
- ultranationalism24
- ultranationalist21
- ultrasonographer26
- ultrasonographic29
- unaffectionately31
- uncongenialities26
- unconstitutional25
- unconventionally32
- unconvincingness34
- undenominational26
- underestimations23
- underproductions28
- underutilization31
- unidirectionally27
- universalization33
- unprofessionally29
- unreasonableness24
- unresponsiveness27
- unseasonableness24
- unsophistication27