There are 593 fourteen-letter words containing A, C, P, S and T, https://www.bestwordlist.com/c/a/5/14letterwordswithacpst.htm ACCEPTABLENESS ACCEPTILATIONS ACCOMPANIMENTS ACCOMPLISHMENT ACCOUNTANTSHIP ACETAMINOPHENS ACHROMATOPSIAS ACTINOMORPHIES ACTINOMORPHOUS ACUPUNCTURINGS ACUPUNCTURISTS AMPLIFICATIONS ANTAPHRODISIAC ANTHROPOSOPHIC ANTICAPITALISM ANTICAPITALIST ANTICENSORSHIP ANTIEPILEPTICS ANTINEOPLASTIC ANTINEPHRITICS ANTIPARASITICS ANTIPHLOGISTIC ANTIPHRASTICAL ANTIPSYCHIATRY ANTIPSYCHOTICS ANTISCRIPTURAL ANTISEPTICALLY ANTISEPTICISED ANTISEPTICISES ANTISEPTICISMS ANTISEPTICIZED ANTISEPTICIZES ANTISPASMODICS ANTISYPHILITIC APERIODICITIES APHORISTICALLY APOCALYPTICISM APOCHROMATISMS APOPHLEGMATICS APOSEMATICALLY APOSTOLICITIES APPENDECTOMIES APPENDICITISES APPERTAINANCES APPRENTICESHIP ARCHPRIESTHOOD ARCHPRIESTSHIP ASSOCIATESHIPS ASTHENOSPHERIC ASTROCOMPASSES ASTROPHYSICIST ASYMPTOTICALLY BACTERIOPHAGES BRACHYPTERISMS BRONCHOSPASTIC CALCIPOTRIENES CALLIGRAPHISTS CAMPANOLOGISTS CAMPYLOBACTERS CAMPYLOTROPOUS CANDIDATESHIPS CAPELLMEISTERS CAPITALISATION CAPRIFICATIONS CAPTIOUSNESSES CARPETBAGGINGS CATASTROPHISMS CATASTROPHISTS CATECHUMENSHIP CENTRIPETALISM CEPHALISATIONS CEPHALIZATIONS CEPHALOMETRIES CHALCOGRAPHIST CHAPTALISATION CHARTERPARTIES CHARTOGRAPHERS CHARTOGRAPHIES CHEMAUTOTROPHS CHEMOTHERAPIES CHEMOTHERAPIST CHIEFTAINSHIPS CHIROGRAPHISTS CHRISTOPHANIES CHROMATOGRAPHS CHROMATOPHORES CHROMATOSPHERE CINEMATOGRAPHS CLAPTRAPPERIES CLAUSTROPHILIA CLAUSTROPHOBES CLAUSTROPHOBIA CLAUSTROPHOBIC COADJUTORSHIPS COCONSPIRATORS COLLAPSABILITY COLLAPSIBILITY COMETOGRAPHIES COMMANDANTSHIP COMPAGINATIONS COMPARATIVISTS COMPASSIONATED COMPASSIONATES COMPATIBLENESS COMPATRIOTISMS COMPENSABILITY COMPENSATIONAL COMPUTERISABLE CONCEPTUALISED CONCEPTUALISER CONCEPTUALISES CONCEPTUALISMS CONCEPTUALISTS CONCEPTUALIZES CONSCRIPTIONAL CONSPIRATIONAL CONSPIRATORIAL CONSPURCATIONS CONSTABLESHIPS CONSTUPRATIONS CONSULTANTSHIP CONTAINERPORTS CONTAINERSHIPS CONTEMPLATIONS CONTEMPLATISTS CONTEMPLATIVES CONTEMPORARIES CONTRACEPTIONS CONTRACEPTIVES CONTRAPOSITION CONTRAPOSITIVE CONTRAPUNTISTS CONVERTAPLANES CONVERTIPLANES CONVERTOPLANES COOPERATIONIST COPARTNERSHIPS CORPORATIVISMS CORPOREALITIES CORPUSCULARITY COSMOGRAPHISTS COSMOPOLITICAL COTEMPORANEOUS COTRANSPORTERS COTRANSPORTING COUNTERPARTIES COUNTERPLAYERS CRAFTSMANSHIPS CRANIOSCOPISTS CRYMOTHERAPIES CRYPTAESTHESIA CRYPTAESTHETIC CRYPTESTHESIAS CRYPTOGRAPHERS CRYPTOGRAPHIES CRYPTOGRAPHIST CRYPTOSPORIDIA CURIETHERAPIES CUSTODIANSHIPS DACTYLOSCOPIES DECAPITALISING DECAPSULATIONS DECOMPENSATING DECOMPENSATION DECREPITATIONS DEDUPLICATIONS DERMATOPLASTIC DESPOTICALNESS DESPOTOCRACIES DIPTEROCARPOUS DISAPPLICATION DISCAPACITATED DISCAPACITATES DISCEPTATORIAL DISCIPLINARITY DISCORPORATING DISINCORPORATE DISRESPECTABLE DODECAPHONISTS ECOCATASTROPHE ECTYPOGRAPHIES ELECTROPLATERS ELLIPTICALNESS EMPHATICALNESS ENCAPSULATIONS ENCEPHALITIDES ENCEPHALITISES ENCOMPASSMENTS ENCYCLOPAEDIST EPITRACHELIONS ERGASTOPLASMIC EUPHUISTICALLY EXCEPTIONALISM EXCEPTIONALIST EXPANSIONISTIC EXPECTORATIONS EXPECTORATIVES FRACTOGRAPHIES GALACTOPHOROUS GALACTOPOIESES GALACTOPOIESIS GALVANOPLASTIC GASTROSCOPISTS GEOPOLITICIANS HARPSICHORDIST HARUSPICATIONS HEPATECTOMISED HEPATICOLOGIES HEPATICOLOGIST HEPATOPANCREAS HYPERACIDITIES HYPERACUTENESS HYPERAESTHESIC HYPERAESTHETIC HYPERCATALEXES HYPERCATALEXIS HYPERDACTYLIES HYPERPARASITIC HYPERREALISTIC HYPERROMANTICS HYPERSARCOMATA HYPOCHONDRIAST HYPOCORISTICAL HYPONASTICALLY HYPOSTATICALLY HYPOTHECATIONS ICHTHYOPHAGIES ICHTHYOPHAGIST ICHTHYOPHAGOUS ICHTHYOPSIDANS IMPROVISATRICE INCAPABILITIES INCAPSULATIONS INCORPORATIONS INDUPLICATIONS INEXPECTANCIES INEXPECTATIONS INTERCOMPANIES ISENTROPICALLY ISOPIESTICALLY JUSTICIARSHIPS LAPAROSCOPISTS LARYNGOSCOPIST LEPTOCEPHALOUS LEPTODACTYLOUS LETTERSPACINGS LEXICOGRAPHIST LICENTIATESHIP LYCANTHROPISTS MAGNETOSPHERIC MESATICEPHALIC METACOMPUTINGS METAPHOSPHORIC METAPHRASTICAL METAPHYSICALLY METAPHYSICIANS METAPHYSICISED METAPHYSICISES METAPHYSICISTS METAPHYSICIZED METAPHYSICIZES METAPSYCHOLOGY METENCEPHALONS METOPOSCOPICAL MICROPARASITES MICROPARASITIC MICROPARTICLES MICROPLANKTONS MICROPULSATION MISACCEPTATION MISANTHROPICAL MISAPPLICATION MISAPPRECIATED MISAPPRECIATES MISCOMPUTATION MISPUNCTUATING MISPUNCTUATION MULTICUSPIDATE MULTIPARTICLES MULTIPLICATORS MUNICIPALITIES NANOCOMPOSITES NEOCAPITALISMS NEOCAPITALISTS NEOPLASTICISMS NEOPLASTICISTS NONACCEPTANCES NONCAPITALISTS NONCOOPERATORS NONPOLITICIANS NONPSYCHIATRIC NONSPECIALISTS NONSPECTACULAR NONSPECULATIVE ONYCHOPHAGISTS OPHTHALMOSCOPE OPHTHALMOSCOPY OPISTHOBRANCHS OPISTHOCOELIAN OPISTHOGRAPHIC OPSONIFICATION OPTIMISTICALLY ORTHOCEPHALIES ORTHOCEPHALOUS OVERCAPACITIES OVERCAPITALISE OVERCOMPENSATE OVERSPECULATED OVERSPECULATES PACHYDACTYLOUS PACHYDERMATOUS PACIFISTICALLY PAEDIATRICIANS PAGANISTICALLY PALAEOCLIMATES PALAEOCURRENTS PALEOECOLOGIST PALMIFICATIONS PANCHROMATISMS PANCREATITIDES PANCREATITISES PANDICULATIONS PANTISOCRACIES PANTISOCRATIST PARALINGUISTIC PARAPHRASTICAL PARCHMENTISING PARENCHYMATOUS PAROCHIALITIES PARONOMASTICAL PARTICIPATIONS PARTICLEBOARDS PARTICULARISED PARTICULARISER PARTICULARISES PARTICULARISMS PARTICULARISTS PARTICULARIZES PARTICULARNESS PATELLECTOMIES PATRIARCHALISM PECTINESTERASE PEDANTOCRACIES PEDUNCULATIONS PENICILLATIONS PENNATULACEOUS PENTADACTYLIES PENTADACTYLISM PENTADACTYLOUS PENTAVALENCIES PEPTIDOGLYCANS PERCUTANEOUSLY PERFECTIONATES PERICARDITIDES PERICARDITISES PERIODICALISTS PERIPATETICISM PERIPHRASTICAL PERISSODACTYLE PERISSODACTYLS PERSCRUTATIONS PERSPICACITIES PERTINACIOUSLY PETRIFICATIONS PETROCHEMICALS PHALLOCENTRISM PHANTASMAGORIC PHANTASMICALLY PHARMACEUTISTS PHARMACOLOGIST PHARMACOPOEIST PHARMACOPOLIST PHELLOPLASTICS PHLEGMATICNESS PHLOGISTICATED PHLOGISTICATES PHOSPHOCREATIN PHOTOCATALYSES PHOTOCATALYSIS PHOTOREACTIONS PHOTOREALISTIC PHTHALOCYANINS PHYLLOSILICATE PHYTOCHEMICALS PICTORIALISING PICTURISATIONS PICTURIZATIONS PINEALECTOMIES PINEALECTOMISE PLACENTOLOGIES PLASTICISATION PLASTICIZATION PLATYCEPHALOUS PLEBIFICATIONS PLECTOGNATHOUS PLEONASTICALLY PNEUMATICITIES PNEUMOGASTRICS PNEUMOTHORACES POCOCURANTEISM POCOCURANTISMS POCOCURANTISTS POETICALNESSES POLITICALISING POLITICISATION POLLICITATIONS POLYCARBONATES POLYCHROMATISM POLYCYTHAEMIAS POLYDACTYLISMS POLYTHEISTICAL PONTIFICATIONS PORNIFICATIONS PORTULACACEOUS POSTADOLESCENT POSTAPOCALYPSE POSTCAPITALIST POSTCOLLEGIATE POSTCOPULATORY POSTDOCTORATES POSTGANGLIONIC POSTMASTECTOMY POSTSURGICALLY PRACTICALITIES PREACQUISITION PREADOLESCENTS PREANAESTHETIC PRECIPITANCIES PRECIPITATIONS PRECONISATIONS PRECONIZATIONS PRECONSONANTAL PREFABRICATORS PREJUDICATIONS PREMEDICATIONS PREOCCUPATIONS PRESANCTIFYING PRESYMPTOMATIC PREVARICATIONS PRINCIPALITIES PROCELEUSMATIC PROCESSABILITY PROCRASTINATED PROCRASTINATES PROCRASTINATOR PROCURATORSHIP PROGNOSTICATED PROGNOSTICATES PROGNOSTICATOR PROJECTISATION PROLIFICATIONS PRONUCLEARISTS PRONUNCIATIONS PROPAGANDISTIC PROSTHETICALLY PROTOACTINIUMS PROTOCHORDATES PROTOPLASMATIC PROTRACTEDNESS PROTUBERANCIES PROVINCIALISTS PSYCHASTHENIAS PSYCHASTHENICS PSYCHOACOUSTIC PSYCHOANALYSTS PSYCHOANALYTIC PSYCHODRAMATIC PSYCHOMETRICAL PSYCHOPATHISTS PSYCHOSOMATICS PUGILISTICALLY PUNCTUATIONIST PUNDITOCRACIES PURCHASABILITY PUTRIFICATIONS QUADRUPLICATES QUASIPARTICLES QUINTUPLICATES RAMAPITHECINES RAPPROCHEMENTS REAPPLICATIONS RECAPITALISING RECIPROCATIONS RECOMPILATIONS RECOMPUTATIONS REDUPLICATIONS REFLECTOGRAPHS REINCORPORATES REPUBLICATIONS REPUNCTUATIONS RESPECTABILISE RESPECTABILITY RESPECTABILIZE SAPONIFICATION SCINTIGRAPHIES SCINTILLASCOPE SCISSIPARITIES SCRIPTURALISMS SCRIPTURALISTS SECRETARYSHIPS SEMIELLIPTICAL SEXTUPLICATING SIMPLIFICATION SIMPLIFICATIVE SIMPLIFICATORS SIMPLISTICALLY SOCIOPOLITICAL SOPHISTICATING SOPHISTICATION SOPHISTICATORS SPECIALISATION SPECIALIZATION SPECIFICATIONS SPECTACULARITY SPECTATORSHIPS SPECTRALNESSES SPECTROGRAPHIC SPECTROLOGICAL SPERMATOPHYTIC SPERMATOTHECAE SPERMATOTHECAS SPHAEROCRYSTAL SPHERICALITIES SPIFFLICATIONS SPINTHARISCOPE SPIRITUALISTIC SPIROCHAETOSES SPIROCHAETOSIS SPIRONOLACTONE SPONGIOBLASTIC STAPEDECTOMIES STAPHYLOCOCCAL STAPHYLOCOCCIC STAPHYLOCOCCUS STEEPLECHASERS STEEPLECHASING STEGANOGRAPHIC STEGOCEPHALIAN STEGOCEPHALOUS STENOGRAPHICAL STEREOSCOPICAL STREPTOBACILLI STROBOSCOPICAL STYLOGRAPHICAL SUBATMOSPHERIC SUBSPECIALISTS SUBSPECIALTIES SUBTHERAPEUTIC SULPHACETAMIDE SUPERCELESTIAL SUPERFICIALITY SUPERPARTICLES SUPERPATRIOTIC SUPERSPECTACLE SUPPLICATINGLY SUSPERCOLLATED SUSPERCOLLATES SYCOPHANTISHLY SYCOPHANTISING SYCOPHANTIZING SYCOPHANTLIEST SYMPATHOLYTICS SYPHILITICALLY TACHISTOSCOPES TACHISTOSCOPIC TACHYGRAPHISTS TECHNOGRAPHIES TECHNOPOLITANS TELENCEPHALONS TELESCOPICALLY THEOSOPHICALLY THERMOPLASTICS THERMOSCOPICAL THROMBOPLASTIC TRACHEOSCOPIES TRACHYPTERUSES TRANSCRIPTASES TRANSCRIPTIONS TRANSCRIPTOMES TRANSPARENCIES TRANSPICUOUSLY TRANSPLACENTAL TRANSPORTANCES TROPOCOLLAGENS ULTRAPRECISION UNMETAPHYSICAL UNPOETICALNESS UNPREDICTABLES UNRESPECTABLES UNSCRIPTURALLY UNSOPHISTICATE YACHTSMANSHIPS YUPPIFICATIONS