13 letters
- indisciplined24
- indisciplines23
- indissociable22
- indissociably24
- indomethacins24
- inefficacious27
- inefficiently27
- infraspecific29
- infrequencies31
- inhabitancies23
- injudiciously32
- insociability23
- insufficiency30
- interglacials21
- interracially21
- intersocietal18
- interspecific26
- intraspecific26
- intrathoracic22
- invincibility28
- irascibleness21
- irrelevancies22
- isotonicities17
- italicization27
- judiciousness29
- lactobacillus26
- letterspacing23
- lieutenancies20
- linguistician22
- lysolecithins23
- maliciousness22
- mathematician25
- maxillofacial32
- meningococcic32
- mercilessness21
- meritocracies22
- metaphysician27
- meteoriticist19
- microcircuits26
- miscibilities23
- molluscicidal27
- molluscicides26
- municipalized35
- municipalizes34
- musicianships26
- neoclassicism24
- neoclassicist21
- neoplasticism24
- neoplasticist21
- neurosciences22
- neurotoxicity27
- nonassociated19
- noncarcinogen25
- noncommercial28
- nonphysicians26
- nonpolitician23
- nonpracticing27
- nonreciprocal25
- nonscientific25
- nonscientists19
- nonsocialists19
- nonspecialist22
- obstetricians20
- occidentalize31
- octodecillion23
- officiousness24
- oleandomycins25
- oneiromancies21
- onomasticians21
- oscillational20
- oscillographs25
- oscillography27
- oscilloscopes24
- oscilloscopic27
- osteomalacias20
- ototoxicities23
- outdistancing22
- overbalancing28
- overcivilized35
- overconscious25
- overexercised28
- overexercises27
- overproducing28
- overservicing27
- pacifications26
- paediatrician21
- paramountcies24
- parasiticidal21
- parasiticides20
- participating25
- participation23
- participative26
- participators22
- participatory24
- participially26
- pathogenicity26
- pediatricians21
- penicillamine26
- penicillinase23
- periodicities20
- persistencies20
- perspicacious26
- pertinacities20
- photoreducing26
- phototoxicity30
- phytotoxicity32
- piscicultures25
- plantocracies24
- polycistronic26
- pragmaticisms27
- pragmaticists24
- preannouncing26
- precipitances26
- precipitantly26
- precipitately25
- precipitating25
- precipitation23
- precipitative26
- precipitators22
- precipitously26
- precisenesses20
- precisionists20
- prejudicially34
- prescientific26
- presentencing24
- prespecifying30
- principalship29
- proboscideans24
- proboscidians24
- proficiencies26
- prolificacies26
- prolificities23
- pronunciation23
- provincialism28
- provincialist25
- provinciality27
- provincialize34
- pseudoscience25
- quadruplicity34
- quindecillion31
- rapaciousness21
- ratiocinating20
- ratiocination18
- ratiocinative21
- ratiocinators17
- recalcitrance24
- recalcitrancy26
- recalcitrants21
- reciprocating25
- reciprocation23
- reciprocative26
- reciprocators22
- reciprocities22
- recirculating24
- recirculation22
- reconcilement25
- reintroducing22
- renunciations20
- reproducibles25
- resocializing29
- resuscitating20
- resuscitation18
- resuscitative21
- resuscitators17
- revaccinating27
- revaccination25
- rhabdomancies26
- rhythmicities25
- romanticising23
- romanticizing32
- sacrificially26
- sagaciousness20
- salaciousness19
- saprogenicity24
- scholasticism25
- scintigraphic27
- scintillantly23
- scintillating22
- scintillation20
- scintillators19
- semicivilized34
- semiconscious24
- sexdecillions27
- sociabilities20
- socialization27
- sociocultural23
- socioeconomic26
- sociolinguist21
- solicitations18
- solicitorship22
- somnifacients24
- specialnesses21
- specification26
- specificities25
- spectinomycin29
- staphylococci30
- statisticians17
- stratocracies19
- streptococcic28
- streptomycins25