There are 433 thirteen-letter words containing 2A, N, P and T, https://www.bestwordlist.com/c/a/5/13letterwordswithaanpt.htm
ACCEPTILATION ACCOMPANIMENT ACCOMPANYISTS ACETAMINOPHEN ACTINOTHERAPY
ADAPTABLENESS ADAPTATIONIST ADAPTEDNESSES AEROPLANKTONS ALPHABETARIAN
ALPHABETISING ALPHABETIZING AMPLIFICATION ANALPHABETICS ANALPHABETISM
ANAPHYLACTOID ANGIOPLASTIES ANISOMETROPIA ANTEPENULTIMA ANTHROPOLATRY
ANTHROPOPATHY ANTHROPOPHAGI ANTHROPOPHAGY ANTIAPARTHEID ANTICIPATABLE
ANTICIPATIONS ANTICORPORATE ANTIPARALLELS ANTIPARASITIC ANTIPARTICLES
ANTIPHONARIES ANTIPLATELETS ANTIPOLITICAL ANTIPREDATORY ANTISPASMODIC
ANTITYPICALLY APHANIPTEROUS APLANATICALLY APLANOGAMETES APPELLATIONAL
APPENDICULATE APPERTAINANCE APPERTAINMENT APPORTIONABLE APPRAISEMENTS
APPRECIATIONS APPROPINQUATE APPROPRIATING APPROPRIATION APPROXIMATING
APPROXIMATION APPURTENANCES APTITUDINALLY ARPEGGIATIONS ASPHYXIATIONS
ASSISTANTSHIP AZATHIOPRINES BALNEOTHERAPY BIPARTISANISM CALLITHUMPIAN
CAMPANOLOGIST CANDIDATESHIP CAPACITATIONS CAPITULATIONS CAPRIFICATION
CAPTIVATINGLY CARPETBAGGING CEPHALISATION CEPHALIZATION CHANNELOPATHY
CINEMATOGRAPH CLEPTOMANIACS COADAPTATIONS COMPAGINATING COMPAGINATION
COMPARTMENTAL COMPASSIONATE COMPLAISANTLY COMPLANATIONS COMPUTATIONAL
CONVERTAPLANE COPLANARITIES CRAFTMANSHIPS CRAFTSMANSHIP CRYPTANALYSES
CRYPTANALYSIS CRYPTANALYSTS CRYPTANALYTIC DEASPIRATIONS DECAPITATIONS
DECAPSULATING DECAPSULATION DEPAUPERATING DEUTERANOPIAS DIAPHANEITIES
DIAPHANOMETER DILAPIDATIONS DISPARAGEMENT DISPARATENESS DISPASSIONATE
DISPLANTATION DISPLEASANTED DRAFTSMANSHIP ELEPHANTIASES ELEPHANTIASIC
ELEPHANTIASIS EMANCIPATIONS ENCAPSULATING ENCAPSULATION ENCEPHALOMATA
ENDOPARASITES ENDOPARASITIC ENHYPOSTASIAS EPINASTICALLY EPISTOLARIANS
EQUIPARATIONS ETHNOGRAPHICA EUSPORANGIATE EXASPERATIONS EXPANDABILITY
EXPATRIATIONS EXPECTATIONAL EXPLANATIVELY EXPLANATORILY EXPLANTATIONS
EXPLORATIONAL EXTRAPOLATING EXTRAPOLATION FLUNITRAZEPAM GALVANOPLASTY
GALVANOTROPIC GRANDPARENTAL GRANTSMANSHIP HALIPLANKTONS HAPPENSTANCES
HARUSPICATING HARUSPICATION HEPATISATIONS HEPATIZATIONS HEPTADECANOIC
HERPETOFAUNAE HERPETOFAUNAS HIPPOPOTAMIAN HYDNOCARPATES HYPERRATIONAL
HYPNOANALYTIC HYPONATRAEMIA HYPONATRAEMIC HYPONATREMIAS IMPARIPINNATE
IMPARTIALNESS IMPLANTATIONS IMPLICATIONAL IMPREGNATABLE INADAPTATIONS
INAPPROPRIATE INCAPACITANTS INCAPACITATED INCAPACITATES INCAPSULATING
INCAPSULATION INSPIRATIONAL INTERPARIETAL INTERSCAPULAR INTRACAPSULAR
INTRAPARIETAL INTRAPERSONAL INTRAPETIOLAR KINEMATOGRAPH KLEPTOMANIACS
MAGNETOGRAPHS MAGNETOPAUSES MALABSORPTION MALADAPTATION MANIPULATABLE
MANIPULATIONS MANIPULATIVES MASTIGOPHORAN MEGALOPOLITAN METAPHYSICIAN
NANNOPLANKTON NANOPARTICLES NANOPLANKTONS NAPHTHALISING NAPHTHALIZING
NAPHTHYLAMINE NATUROPATHIES NEOCAPITALISM NEOCAPITALIST NEUROPATHICAL
NITROPARAFFIN NONACCEPTANCE NONALPHABETIC NONCAPITALIST NONPARAMETRIC
ONOMATOPOEIAS OPERATIONALLY ORGANOTHERAPY OUTMANIPULATE PACIFICATIONS
PAEDIATRICIAN PAGANISATIONS PAGANIZATIONS PAINSTAKINGLY PAINTBALLINGS
PALAEOBOTANIC PALAEOCURRENT PALAEONTOLOGY PALATABLENESS PALEOBOTANIES
PALEOBOTANIST PALEOMAGNETIC PALIFICATIONS PALLETISATION PALLETIZATION
PALMIFICATION PALUDAMENTUMS PANAESTHESIAS PANAESTHETISM PANCHROMATISM
PANCYTOPENIAS PANDICULATION PANGRAMMATIST PANIFICATIONS PANOPHTHALMIA
PANRADIOMETER PANSEXUALISTS PANSPERMATISM PANSPERMATIST PANTHEISTICAL
PANTISOCRATIC PANTOGRAPHERS PANTOGRAPHIES PANTOPHAGISTS PANTOTHENATES
PARAGNATHISMS PARALYSATIONS PARALYZATIONS PARAMAGNETISM PARAMENSTRUUM
PARAMETRISING PARAMETRIZING PARAMOUNTCIES PARANORMALITY PARASYMBIONTS
PARASYNTHESES PARASYNTHESIS PARASYNTHETIC PARASYNTHETON PARATHORMONES
PARENTHETICAL PARLIAMENTARY PARLIAMENTING PARTHENOCARPY PARTIALNESSES
PARTICIPANTLY PARTICIPATING PARTICIPATION PARTISANSHIPS PARTIZANSHIPS
PARVANIMITIES PATENTABILITY PATERNALISTIC PATRILINEAGES PATRILINEALLY
PATRILINEARLY PATRIMONIALLY PATRONISATION PATRONIZATION PAUPERISATION
PAUPERIZATION PEDANTOCRATIC PEDIATRICIANS PENALISATIONS PENALIZATIONS
PENEPLANATION PENTABARBITAL PENTADACTYLES PENTADACTYLIC PENTAHYDRATES
PENTASYLLABIC PENTAVALENCES PENTOBARBITAL PERAMBULATING PERAMBULATION
PERMANGANATES PERMUTATIONAL PHALANSTERIAN PHALANSTERIES PHALANSTERISM
PHALANSTERIST PHANTASMAGORY PHANTASMALIAN PHANTASMALITY PHENOBARBITAL
PHONASTHENIAS PHONAUTOGRAPH PHTHALOCYANIN PHYTOSANITARY PIANISTICALLY
PLACENTATIONS PLANETESIMALS PLANIMETRICAL PLANTOCRACIES PLASTINATIONS
PLASTOCYANINS PLATINISATION PLATINIZATION PLATINOCYANIC PLATYRRHINIAN
PLURALISATION PLURALIZATION PNEUMATICALLY POLARISATIONS POLARIZATIONS
POLYCARBONATE POSTCRANIALLY POSTINAUGURAL POSTLAPSARIAN POSTULATIONAL
POTICHOMANIAS PRACTICALNESS PREACQUAINTED PREADAPTATION PREAMBULATING
PRECAUTIONARY PREDICAMENTAL PRETERNATURAL PREVARICATING PREVARICATION
PREVOCATIONAL PRIVATEERSMAN PRIVATISATION PRIVATIZATION PROBATIONALLY
PROCLAMATIONS PROCRASTINATE PROCREATIONAL PROGRADATIONS PROPAGANDISTS
PROPAGATIONAL PROPRAETORIAN PROSENCHYMATA PROSTAGLANDIN PROSTANTHERAS
PROTANOMALIES PROTANOMALOUS PROTOLANGUAGE PROTONOTARIAL PROTONOTARIAT
PSYCHASTHENIA PSYCHOANALYST PTERIDOMANIAS PTEROSAURIANS PURITANICALLY
PUTANGITANGIS RAMAPITHECINE REACCEPTANCES READAPTATIONS REAPPLICATION
REPAGINATIONS REPATRIATIONS REPLANTATIONS RESPIRATIONAL SANDPAINTINGS
SANDPAPERIEST SATANOPHANIES SATANOPHOBIAS SCAPEGOATINGS SCAPULIMANTIC
SCAPULOMANTIC SEMIPALMATION SEPARATIONISM SEPARATIONIST SPERMATOGONIA
SPERMATOZOANS SPHACELATIONS STANDPATTISMS STAPHYLINIDAE STATESMANSHIP
STEGANOGRAPHS STEGANOGRAPHY STRAPHANGINGS SUPERABUNDANT SUPERANNUATED
SUPERANNUATES SUPERNATATION SUPERNATIONAL SUPERNATURALS SUPPLANTATION
SUPRANATIONAL SUPRARATIONAL SYCOPHANTICAL SYNAPOSEMATIC TAUTOPHONICAL
TEMPERAMENTAL THANATOGRAPHY THANATOPHOBIA TOTIPALMATION TRANSCRIPTASE
TRANSPARENCES TRANSPARENTLY TRANSPERSONAL TRANSPIRATION TRANSPIRATORY
TRANSPLANTERS TRANSPLANTING TRANSPORTABLE TRANSPORTANCE TRYPAFLAVINES
UNACCEPTANCES UNANTICIPATED UNAPOSTOLICAL UNAPPRECIATED UNAPPROPRIATE
UNCAPITALISED UNCAPITALIZED UNCOMPLAISANT UNIPARENTALLY UNMANIPULATED
UNPARASITISED UNPARASITIZED UNPRACTICABLE UNPRACTICALLY UNSPECTACULAR
UNTRANSPARENT URANOGRAPHIST URANOPLASTIES VAPORISATIONS VAPORIZATIONS
WATERMANSHIPS WEAPONIZATION YACHTSMANSHIP