There are 574 twelve-letter words containing A, P, T and Y, https://www.bestwordlist.com/c/a/4/12letterwordswithapty.htm
ABSORPTIVITY ACCOMPANYIST ACTINOMORPHY ADAPTABILITY ADOPTABILITY
AMPHICTYONIC AMPHISTYLARS AMYLOPECTINS AMYOTROPHIES ANAGLYPTICAL
ANAPHYLACTIC ANAPTYCTICAL ANTHROPOGENY ANTHROPOGONY ANTHROPOLOGY
ANTHROPOTOMY ANTICIPATORY ANTIEPILEPSY ANTIMONOPOLY ANTIPHONALLY
ANTIPRIESTLY ANTIPYRETICS APERIODICITY APOCALYPTISM APOCALYPTIST
APOCYNTHIONS APODYTERIUMS APOLITICALLY APOPHYLLITES APOSTOLICITY
APPENDECTOMY APPETISINGLY APPETIZINGLY APPOSITIVELY APPRECIATORY
ARCHETYPALLY ARCHETYPICAL AROMATHERAPY ARSENOPYRITE ARTHROGRAPHY
ARTHROPLASTY ASPHYXIATING ASPHYXIATION ASPHYXIATORS ASSUMPTIVELY
ASTROPHYSICS ASYMPTOMATIC ASYMPTOTICAL ATTORNEYSHIP AUDIOTYPINGS
AUDIOTYPISTS AUTOHYPNOSES AUTOHYPNOSIS AUTOHYPNOTIC AUTOPTICALLY
BATHYGRAPHIC BATHYPELAGIC BATHYSCAPHES BATHYSPHERES BIPARENTALLY
BRADYPEPTICS CAESPITOSELY CALYPTROGENS CAPACITIVELY CAPITULATORY
CATAPHYLLARY CATAPHYSICAL CEPHALOMETRY CHALCOPYRITE CHAMAEPHYTES
CHARTERPARTY CHARTOGRAPHY CHEMOTHERAPY CHRISTOPHANY CLAPTRAPPERY
COMETOGRAPHY COMPENSATORY COMPLACENTLY COMPULSATORY COMPURGATORY
CONCEPTUALLY CONSPIRATORY CONTEMPORARY COPULATIVELY CORPOREALITY
COUNTERPARTY COUNTERPLAYS CRYMOTHERAPY CRYOPLANKTON CRYPTANALYST
CRYPTARITHMS CRYPTOCOCCAL CRYPTOGAMIAN CRYPTOGAMIES CRYPTOGAMIST
CRYPTOGAMOUS CRYPTOGRAPHS CRYPTOGRAPHY CRYPTOMERIAS CRYPTOMNESIA
CURIETHERAPY CYCADOPHYTES CYCLOPAEDIST CYCLOPENTANE DACTYLOSCOPY
DEPRECIATORY DERMATOPHYTE DESPOTICALLY DESPOTOCRACY DICTYOPTERAN
DIOPTRICALLY DISCREPANTLY DISPENSATORY DISREPUTABLY DISSIPATEDLY
DRAPEABILITY ECLIPTICALLY ECOTYPICALLY ECTYPOGRAPHY ELLIPTICALLY
EMANCIPATORY EMPATHICALLY EMPHATICALLY EMPYREUMATIC ENANTIOPATHY
ENANTIOTROPY ENHYPOSTASIA ENHYPOSTATIC ENTROPICALLY EPHEMERALITY
EPISTOLATORY ERYTHROPENIA ERYTHROPSIAS EUCALYPTOLES EUCALYPTUSES
EXPROBRATORY EXTEMPORALLY FOREPAYMENTS FRACTOGRAPHY GAMETOPHYTES
GAMETOPHYTIC GASTROPLASTY GLYPTOGRAPHY GLYPTOTHECAE HALOPHYTISMS
HELIOTHERAPY HEPATICOLOGY HEPATOMEGALY HETEROGRAPHY HETEROPLASTY
HOMEOTYPICAL HOMOPOLARITY HYDNOCARPATE HYDROPATHICS HYDROPATHIES
HYDROPATHIST HYDROTHERAPY HYETOGRAPHIC HYLOPATHISMS HYLOPATHISTS
HYMENOPLASTY HYMENOPTERAN HYPAESTHESIA HYPAESTHESIC HYPERACIDITY
HYPERACTIONS HYPERACTIVES HYPERDACTYLY HYPERMARKETS HYPERMUTABLE
HYPERPLASTIC HYPERREACTOR HYPERREALIST HYPERREALITY HYPERSPATIAL
HYPERSTHENIA HYPERTEXTUAL HYPERTHERMAL HYPERTHERMIA HYPERTHYMIAS
HYPERTYPICAL HYPESTHESIAS HYPHENATIONS HYPNOTHERAPY HYPNOTICALLY
HYPNOTISABLE HYPNOTIZABLE HYPOCRITICAL HYPOGASTRIUM HYPOGNATHISM
HYPOGNATHOUS HYPONATREMIA HYPONATREMIC HYPOPLASTIES HYPOPLASTRON
HYPOSTASISED HYPOSTASISES HYPOSTASIZED HYPOSTASIZES HYPOSTATICAL
HYPOSTATISED HYPOSTATISES HYPOSTATIZED HYPOSTATIZES HYPOSTHENIAS
HYPOSULPHATE HYPOTHALAMIC HYPOTHALAMUS HYPOTHECATED HYPOTHECATES
HYPOTHECATOR HYPOTHERMIAS HYPOTHETICAL HYPOXANTHINE ICHTHYOPHAGY
IMPARTIALITY IMPENETRABLY IMPERATIVELY IMPUTABILITY IMPUTATIVELY
INAPPARENTLY INAPPOSITELY INCAPABILITY INCOMPATIBLY INCOMPUTABLY
INDISPUTABLY INEXPECTANCY INHOSPITABLY INTERCOMPANY INTERPLAYING
INTRACOMPANY INTRAPSYCHIC ISOTOPICALLY ITHYPHALLICS KARYOTYPICAL
KERATOPHYRES KERATOPLASTY LEPTODACTYLS LYCANTHROPES LYCANTHROPIC
LYMPHANGITIC LYMPHANGITIS LYMPHOBLASTS LYMPHOMATOID LYMPHOMATOUS
MANIPULATORY MASSOTHERAPY MEPHITICALLY METAPHYSICAL METAPSYCHICS
MICROPAYMENT MONOSYNAPTIC MORPHOSYNTAX MULTIPLAYERS MUNICIPALITY
MYCOPHAGISTS MYCOPLASMATA MYELOPATHIES MYOGRAPHISTS MYTHOGRAPHER
NEUROTYPICAL NONSPATIALLY NYCTOPHOBIAS ODONTOGRAPHY OPALESCENTLY
OPERATICALLY OPINIONATELY OPPOSABILITY ORTHOCEPHALY OVERCAPACITY
OVERPAYMENTS PACIFICATORY PALAEOBOTANY PALATABILITY PALEONTOLOGY
PALLIATIVELY PALYNOLOGIST PANCYTOPENIA PANICULATELY PANOPTICALLY
PANPSYCHISTS PANSEXUALITY PANTALOONERY PANTISOCRACY PAPYROLOGIST
PARALYSATION PARALYZATION PARAMILITARY PARASITOLOGY PARASYMBIONT
PARASYNAPTIC PARASYNTHETA PARATHYROIDS PARATYPHOIDS PARENCHYMATA
PARENTERALLY PAROCHIALITY PARTICULARLY PASSIONATELY PATELLECTOMY
PATHETICALLY PATHOBIOLOGY PATRILOCALLY PEDANTICALLY PEDANTOCRACY
PEJORATIVELY PENITENTIARY PENTADACTYLE PENTADACTYLS PENTADACTYLY
PENTAGONALLY PENTAHYDRATE PENTAVALENCY PERCEPTUALLY PERENNIALITY
PERFORMATORY PERINATOLOGY PERITONEALLY PERMEABILITY PERPETUALITY
PERSPICACITY PERSPIRATORY PERTURBATORY PHAENOTYPING PHAGOCYTICAL
PHAGOCYTISED PHAGOCYTISES PHAGOCYTISMS PHAGOCYTIZED PHAGOCYTIZES
PHAGOCYTOSED PHAGOCYTOSES PHAGOCYTOSIS PHAGOCYTOTIC PHANEROPHYTE
PHANTASMALLY PHARYNGOTOMY PHENOTYPICAL PHILANTHROPY PHONETICALLY
PHONOTYPICAL PHOSPHATIDYL PHOTODYNAMIC PHOTOLYSABLE PHOTOLYZABLE
PHOTOTHERAPY PHREATOPHYTE PHYCOXANTHIN PHYLACTERIES PHYLETICALLY
PHYLLOTACTIC PHYLLOTAXIES PHYSIATRICAL PHYSIATRISTS PHYSICALISTS
PHYSIOCRATIC PHYSIOLATERS PHYTOALEXINS PHYTOGRAPHER PHYTOGRAPHIC
PHYTOLOGICAL PHYTONADIONE PHYTOPHAGIES PHYTOPHAGOUS PHYTOPLASMAS
PHYTOTHERAPY PICTORICALLY PINEALECTOMY PINNATIFIDLY PLACENTOLOGY
PLASTOCYANIN PLATELAYINGS PLATINOTYPES PLATONICALLY PLATYRRHINES
PLAUSIBILITY PLAYWRITINGS PLEBISCITARY PNEUMATICITY PNEUMATOLOGY
POLYAMORISTS POLYANTHUSES POLYCHAETOUS POLYCRYSTALS POLYCYTHEMIA
POLYGONATUMS POLYGRAPHIST POLYMASTISMS POLYNUCLEATE POLYPETALOUS
POLYSORBATES POLYSYNAPTIC POLYTONALISM POLYTONALIST POLYTONALITY
POLYURETHANE POLYURETHANS PONTIFICALLY POSITIONALLY POSTCORONARY
POSTLIMINARY POSTSYNAPTIC POSTVAGOTOMY POTENTIALITY PRACTICALITY
PRAISEWORTHY PRECIPITANCY PREGNABILITY PRELATICALLY PREMARITALLY
PREOVULATORY PRESBYTERATE PRESBYTERIAL PRESBYTERIAN PRESENTIALLY
PRESERVATORY PRINCIPALITY PRINTABILITY PROBATIONARY PROCLAMATORY
PROCTORIALLY PROFLIGATELY PROPHYLACTIC PROPITIATORY PROSTACYCLIN
PROTEOGLYCAN PROTHONOTARY PROTOMARTYRS PROTOTYPICAL PROTRACTEDLY
PROTUBERANCY PROVEABILITY PRUDENTIALLY PSAMMOPHYTES PSAMMOPHYTIC
PSEUDOMARTYR PSILANTHROPY PSYCHIATRIES PSYCHIATRIST PSYCHOACTIVE
PSYCHOPATHIC PTERODACTYLE PTERODACTYLS PTYALAGOGUES PUNDITOCRACY
PUPILABILITY PURIFICATORY PURISTICALLY PYRANOMETERS PYRARGYRITES
PYRITHIAMINE PYRITOHEDRAL PYROCATECHIN PYROCATECHOL PYROCLASTICS
PYROGALLATES PYROMAGNETIC PYROMETRICAL PYROSULPHATE PYROTARTARIC
PYROTARTRATE RADIOTHERAPY RECUPERATORY REPARABILITY REPUTABILITY
REPUTATIVELY RHYTHMOPOEIA SAPIENTIALLY SAPROPHYTISM SCINTIGRAPHY
SCISSIPARITY SCRIPTURALLY SCULPTURALLY SCYPHISTOMAE SCYPHISTOMAS
SEPARABILITY SEPARATIVELY SEPTENNIALLY SEPTICIDALLY SEPTUAGENARY
SOMATOTYPING SPASMOLYTICS SPERMAPHYTES SPERMAPHYTIC SPERMATOCYTE
SPERMATOGENY SPHERICALITY SPIRITUALITY SPORTABILITY STAPEDECTOMY
STAPHYLINIDS STAPHYLOMATA STEATOPYGIAS STEATOPYGOUS STEREOGRAPHY
STRATIGRAPHY STYLOGRAPHIC SUBOPTIMALLY SUBSPECIALTY SUPERABILITY
SUPERGRAVITY SUPERQUALITY SUPPLICATORY SUPRAVITALLY SYCOPHANTISE
SYCOPHANTISH SYCOPHANTISM SYCOPHANTIZE SYMPATHETICS SYMPATHISERS
SYMPATHISING SYMPATHIZERS SYMPATHIZING SYMPTOMATISE SYMPTOMATIZE
SYNADELPHITE SYNAPTICALLY SYNAPTOSOMAL SYNAPTOSOMES SYNCOPATIONS
SYNOPTICALLY SYNTHESPIANS TACHYGRAPHER TACHYGRAPHIC TACHYPHASIAS
TACHYPHRASIA TECHNOGRAPHY TEMPTABILITY TENDINOPATHY TENDONOPATHY
TETRAPYRROLE THALLOPHYTES THALLOPHYTIC THERMOGRAPHY TRACHEOPHYTE
TRACHEOSCOPY TRACHYPTERUS TRANSPARENCY TRIGLYPHICAL TRIPARTITELY
TRIPINNATELY TRIUMPHANTLY TRYPAFLAVINE TRYPANOCIDAL TRYPANOCIDES
TRYPANOSOMAL TRYPANOSOMES TRYPANOSOMIC TRYPARSAMIDE TRYPTOPHANES
TYMPANITESES TYMPANITISES TYPECASTINGS TYPICALITIES TYPIFICATION
TYPOGRAPHERS TYPOGRAPHIES TYPOGRAPHING TYPOGRAPHIST UNACCEPTABLY
UNDERPAYMENT UNDISPUTABLY UNHYPHENATED UNPLEASANTLY UNPLEASANTRY
UNPOETICALLY UNPOPULARITY UNPROFITABLY UNREPEATABLY UNSYMPATHIES
VAPORABILITY VITUPERATORY XANTHOPHYLLS ZOOPATHOLOGY