11 letters
- obliterator15
- operability20
- portability20
- problematic24
- prohibitory21
- reprobatory19
- robotically21
- orthopaedic20
- pedicellate20
- petrodollar17
- phylloclade25
- placeholder22
- polychromed26
- preallotted17
- predicatory20
- predoctoral19
- premeditate18
- protocolled20
- pterodactyl21
- radiometric18
- rechartered17
- recollected20
- redecorator15
- ricochetted20
- phytochrome26
- recommittal21
- necrophilia21
- necrophilic24
- neocortical19
- nephrectomy25
- oneirically19
- optionality18
- ornithopter17
- orthocenter17
- orthonormal18
- orthopteran17
- parenthetic20
- partitioner15
- penicillate20
- percolation19
- perionychia22
- pertinacity20
- petitionary17
- phonotactic23
- pinocytotic23
- planimetric22
- platyrrhine20
- poltroonery18
- polycentric24
- polytechnic26
- potentially19
- preclinical23
- precolonial20
- preelection19
- preliminary21
- premonitory20
- preromantic21
- preterminal19
- procreation18
- promotional19
- protonotary17
- protraction18
- pyrotechnic25
- recriminate18
- rectilinear16
- reinterpret15
- reiteration12
- reoperation15
- reorientate12
- repartition15
- repellently20
- replacement22
- replication19
- retinopathy19
- retroaction15
- rhetorician17
- pamphleteer23
- peripatetic20
- perpetrator17
- photocopier22
- phototropic22
- pleiotropic21
- pleomorphic26
- polymorphic28
- porphyritic24
- precipitate20
- procephalic26
- prophetical23
- propitiator17
- proprietary19
- protopathic22
- protophloem23
- prototrophy21
- optometries17
- orchestrate16
- orthoscopic22
- oscillatory18
- osmotically21
- osteopathic19
- paresthetic19
- pellitories16
- percolators18
- peristaltic18
- peristomial18
- philatelies18
- philatelist18
- photometers19
- photomosaic22
- phytosterol19
- plasmolytic24
- pleochroism23
- plyometrics23
- polychaetes22
- polychromes25
- polymathies22
- posteriorly17
- precocities20
- prehistoric19
- preschooler20
- procaryotes19
- proclaimers21
- procreators17
- prothoraces19
- protostelic18
- protractors17
- psychiatric24
- psychomotor24
- pyroclastic23
- pyrometries19
- pyrrhotites18
- receptacles21
- reciprocals21
- repertoires14
- repertories14
- replicators18
- reproachers19
- respiratory16
- rototillers13
- sclerometer18
- semitrailer15
- sociometric20
- sociopathic22
- spherically23
- spherometer19
- spirochaete19
- spirochetal20
- spirometric20
- steamroller16
- stereotyper16
- stereotypic19
- storyteller15
- sympathetic24
- phototactic22
- peculiarity21
- perithecium23
- plutocratic22
- portraiture15
- prematurely21
- prematurity20
- prothallium22
- recirculate19
- operatively21
- ovariectomy23
- overcorrect21
- overliteral17
- overoperate18
- overpromote21
- overprotect21
- overreacher20
- partitively21
- procreative21
- protractive21
- receptively24
- receptivity23
- reiterative15
- replicative22
- retroactive18
- piezometric29
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