There are 751 ten-letter words containing A, O, P, S and T, https://www.bestwordlist.com/c/a/5/10letterwordswithaopst.htm ABBOTSHIPS ABRUPTIONS ABSORPTION ABSORPTIVE ACTINOPODS ADAPTOGENS ADEMPTIONS ADIPOCYTES ADSORPTION ADSORPTIVE AEROPHYTES ALLOTROPES ALLOTYPIES ALPENSTOCK ALPHASORTS ALTIPLANOS AMBROTYPES AMETROPIAS AMPHOLYTES AMPUTATORS AMYLOPLAST ANASTROPHE ANATROPIES ANATROPOUS ANCIPITOUS ANISOTROPY ANTHOCARPS ANTIPASTOS ANTIPODALS APATHATONS APATOSAURS APHORISTIC APHRODITES APOCOPATES APOLAUSTIC APOLOGISTS APOPHYSATE APOSEMATIC APOSTACIES APOSTASIES APOSTATISE APOSTATIZE APOSTILLES APOSTOLATE APOSTOLISE APOSTOLIZE APOSTROPHE APOTHEOSES APOTHEOSIS APOTROPOUS APPARITORS APPOINTEES APPOINTERS APPOINTORS APPORTIONS APPOSITELY APPOSITION APPOSITIVE APPROBATES APRIORISTS ARCTOPHILS ARTHROPODS ARTOCARPUS ASCRIPTION ASPIRATION ASPIRATORS ASPIRATORY ASSUMPTION ASTHENOPIA ASTHENOPIC ASTROPHELS ASYMPTOTES ASYMPTOTIC ATMOSPHERE AUDIOTAPES AUTHORSHIP AUTOGRAPHS AUTOPHYTES AUTOPILOTS AUTOPISTAS AUTOPLASTY AUTOPOINTS AUTOPSISTS AUTOPSYING AUTOSCOPIC AUTOSPORES AUTOSPORTS AUTOTROPHS AUTOTYPIES AUXOTROPHS AZEOTROPES BALLPOINTS BEANSPROUT BIOPARENTS BIOPIRATES BIOPLASTIC BIPETALOUS BLACKSPOTS BLASTOPORE BLASTOPORS BOOKPLATES BOOTSTRAPS CACOTOPIAS CAESPITOSE CALOTYPIST CAMPSTOOLS CANTALOUPS CAPACITORS CAPODASTRO CAPOTASTOS CAPTIOUSLY CAPTOPRILS CARROTTOPS CARTOPPERS CASHPOINTS CATAPHORAS CATCHPOLES CATCHPOLLS CATOPTRICS CERATOPSID CHAETOPODS CHASEPORTS CHASSEPOTS CHEAPSHOTS CHIPOLATAS CLEOPATRAS COCAPTAINS COMPACTERS COMPACTEST COMPACTORS COMPENSATE COMPLAINTS COMPUTANTS CONSPIRANT CONSTIPATE COOPERATES COPARTNERS COPATRIOTS COPAYMENTS COPYTAKERS CORPORATES CORPOSANTS CRAPSHOOTS CRISPATION CROREPATIS CROSSPATCH CRYPTOGAMS CYANOTYPES CYSTOCARPS CYTOPENIAS CYTOPLASMS CYTOPLASTS DANCESPORT DAVENPORTS DEPILATORS DEPOSITARY DEPURATORS DESPOTATES DESPOTICAL DEUTOPLASM DIASPORIST DIATROPISM DIPETALOUS DIPLOMATES DISAPPOINT DISSIPATOR DOORPLATES DYSTOPIANS DYSTROPHIA ECTOPLASMS EMPLASTRON EPILATIONS EPISCOPANT EPISCOPATE EPISTOLARY EPULATIONS EPURATIONS ESOTROPIAS ESTOPPAGES EVAPORATES EVAPORITES EXOPLANETS EXOTROPIAS EXPIATIONS EXTRAPOSED EXTRAPOSES EXTROPIANS FACTORSHIP FETIPAROUS FLASHPOINT FLOPTICALS FOOTPLATES FRONTPAGES GANTELOPES GASTEROPOD GASTROPODS GASTROPORN GASTROPUBS GASTROSOPH GEOPHAGIST GEOSPATIAL GLYPHOSATE GODPARENTS GRAPESHOTS GRAPESTONE GRASSPLOTS HAANEPOOTS HALOPHYTES HAPLOTYPES HEPTAGLOTS HOMEOPATHS HOMOPLASTY HONEYTRAPS HOSPITABLE HOSPITABLY HOSPITAGES HOSPITALER HOSPITALES HOURPLATES HOUSEPLANT HYDROPATHS HYOPLASTRA HYPOBLASTS HYPOCAUSTS HYPONASTIC HYPOPLASTY HYPOSTASES HYPOSTASIS HYPOSTATIC HYPOTONIAS IMPACTIONS IMPERATORS INAPPOSITE INSPIRATOR INTERPOSAL ISOPACHYTE ISOPTERANS JOCKSTRAPS JUXTAPOSED JUXTAPOSES KARYOTYPES KOMPROMATS LACTOSCOPE LAMPOONIST LEUCOPLAST LIPOMATOUS LIPOPLASTS LITHOPHYSA LOCOPLANTS MATRONSHIP MISCAPTION MOSSPLANTS MOUSETRAPS MOUTHPARTS MYOPATHIES NEOPLASTIC NEUROPATHS NONIMPACTS NONPARENTS NONPARTIES NONPLASTIC NONSEPTATE NONSPATIAL NONSTAPLES NOSTOPATHY NOTARYSHIP NOTEPAPERS NYCTALOPES OCCIPITALS OCTAPLOIDS OCTAPODIES OCTOPODANS OMPHACITES OPALESCENT OPERATIONS OPERATISED OPERATISES OPERATIVES OPERATIZES OPPUGNANTS OPTIMALISE OSTEOPATHS OSTEOPATHY OUTGALLOPS OUTPASSING OUTPASSION OUTPLACERS OUTSPANNED OUTSPARKLE OUTSPREADS OVERPAINTS OVERPLANTS OVIRAPTORS PACKCLOTHS PAINTBOXES PAINTWORKS PALEOLITHS PALLIATORS PALMATIONS PALMETTOES PALPATIONS PAMPOOTIES PANDATIONS PANETTONES PANSOPHIST PANTALEONS PANTALONES PANTALOONS PANTHENOLS PANTIHOSES PANTOFFLES PANTOMIMES PANTOSCOPE PANTOUFLES PANTYHOSES PANZOOTICS PAPILLOTES PARABOLIST PARADOXIST PARALOGIST PARAMOUNTS PARAQUITOS PARASHIOTH PARASITOID PARATHIONS PARATROOPS PARDALOTES PARODISTIC PARROQUETS PARROTFISH PARROTIEST PARROTRIES PARTITIONS PARTYGOERS PASSIONATE PASSPORTED PASTEBOARD PASTEDOWNS PASTICCIOS PASTITSIOS PASTORALES PASTORALLY PASTORATES PASTORIUMS PASTORLIER PASTORSHIP PASTRYCOOK PATCHOCKES PATCHOULIS PATCHWORKS PATERCOVES PATEREROES PATHOGENES PATRIOTISM PATROLLERS PATRONAGES PATRONISED PATRONISER PATRONISES PATRONIZES PATRONLESS PATULOUSLY PEARLWORTS PEASHOOTER PECULATORS PEDALBOATS PELTATIONS PENSIONNAT PENTAPOLIS PENTOSANES PERBORATES PERCOLATES PERFORATES PERFORATUS PERIASTRON PERIODATES PERIOSTEAL PERISTOMAL PERMAFROST PERMEATORS PERORATORS PERSONALTY PERSONATED PERSONATES PERSONATOR PETALODIES PETROGRAMS PETROLAGES PETROSTATE PETTICOATS PHACOLITES PHACOLITHS PHAGOCYTES PHANTOMISH PHANTOSMES PHENOLATES PHILOMATHS PHONATHONS PHONATIONS PHOSPHATED PHOSPHATES PHOSPHATIC PHOTOCALLS PHOTOCARDS PHOTOFLASH PHOTOGRAMS PHOTOMASKS PHOTONASTY PHOTOPHASE PHOTOPLAYS PHOTOPSIAS PHOTOSCANS PHOTOSTATS PHOTOTAXES PHOTOTAXIS PHYSIOCRAT PIANOLISTS PICTOGRAMS PICTORIALS PIGMENTOSA PIGNORATES PINNATIONS PISTACHIOS PIZZICATOS PLACATIONS PLANATIONS PLANETOIDS PLANOBLAST PLASTISOLS PLASTOGAMY PLATINOIDS PLATONISMS PLAYACTORS PLEONASTES PLEONASTIC PLICATIONS PLOWSTAFFS PLUTOCRATS PODCASTERS PODCASTING PODIATRIES PODIATRIST POETASTERS POETASTERY POINSETTIA POLARITIES POLIANITES POLLENATES POLLINATES POLLTAKERS POLLUTANTS POLYANTHAS POLYANTHUS POLYBASITE POLYGAMIST POLYMASTIA POLYMASTIC POLYSEMANT POLYSTYLAR POLYWATERS PONDERATES PONTIANACS PONTIANAKS POPULARIST PORCHETTAS PORISMATIC PORISTICAL PORTAPACKS PORTATIVES PORTERAGES PORTOLANOS PORTRAYALS PORTRAYERS PORTULACAS POSITIONAL POSTARREST POSTATOMIC POSTATTACK POSTCARDED POSTCOITAL POSTDATING POSTDEBATE POSTHASTES POSTHEATED POSTILLATE POSTIMPACT POSTLAUNCH POSTMARKED POSTMASTER POSTMATING POSTOCULAR POSTPARTUM POSTRACIAL POSTSEASON POSTULANCY POSTULANTS POSTULATED POSTULATES POSTULATOR POSTULATUM POTASSIUMS POTATOBUGS POTENTATES POTENTIALS POTICARIES POTLATCHES POTTINGARS POTWALLERS POUTASSOUS POWERBOATS PRACTOLOLS PRAEPOSTOR PREDATIONS PREFORMATS PRELATIONS PRELOCATES PREOBTAINS PRESTATION PRESTORAGE PRETORIANS PRISMATOID PRIVATIONS PROACTIONS PROBATIONS PROCREANTS PROCREATES PROFASCIST PROKARYOTS PROLACTINS PROLATIONS PRONATIONS PRONATORES PROPAGATES PROPLASTID PROPOSITAE PRORATIONS PROROGATES PROSATEURS PROSTATISM PROSTOMIAL PROSTRATED PROSTRATES PROTAMINES PROTANOPES PROTEINASE PROTESTANT PROTHALLUS PROTISTANS PROTONATES PROTOPLASM PROTOPLAST PROTOSTARS PROTOZOANS PROVOCANTS PSALMODIST PSORIATICS PSYCHOPATH PTEROSAURS PUFTALOONS PULMONATES PULSATIONS PULTACEOUS PUNCTATORS PURGATIONS PUTONGHUAS PYROCLASTS PYROLATERS PYROLYSATE PYROSTATIC RAINSPOUTS RANTIPOLES RATTLEPODS REAPPOINTS RECAPTIONS RECOMPACTS REOPERATES REPORTAGES REPROBATES REPTATIONS RESPIRATOR RETROPACKS RHAPONTICS RHAPSODIST ROTAPLANES ROTOGRAPHS SALLYPORTS SALOPETTES SANDSPOUTS SAPROBIONT SAPROLITES SAPROLITIC SAPROPHYTE SAPROTROPH SCAPEGOATS SCAPOLITES SCATOPHAGY SCRIPTORIA SEALPOINTS SELLOTAPED SELLOTAPES SEMIPOSTAL SEPARATION SEPARATORS SEPARATORY SEPTATIONS SITOPHOBIA SMARTPHONE SMOOTHPATE SOAPSTONES SOCIOPATHS SOCIOPATHY SOFTSCAPES SOLEPLATES SOMATOTYPE SOPRANISTS SPACEPORTS SPADEFOOTS SPALLATION SPANIOLATE SPASMODIST SPATANGOID SPATCHCOCK SPEARWORTS SPECIATION SPECTATORS SPECULATOR SPEEDBOATS SPIRATIONS SPOLIATING SPOLIATION SPOLIATIVE SPOLIATORS SPOLIATORY SPOONBAITS SPORTANCES SPORTCOATS SPORTSCAST SPORTSWEAR SPORULATED SPORULATES STAINPROOF STAMPEDOED STANDPOINT STANNOTYPE STAPHYLOMA STATOSCOPE STEATOPYGA STEGANOPOD STENOGRAPH STENOPAEIC STIPULATOR STOMATOPOD STOOPBALLS STRAPONTIN STRAPPADOS STRAPWORTS STRIPOGRAM STROKEPLAY STROPHICAL STROUPACHS STUPRATION STYLOGRAPH STYLOPODIA SUBCOMPACT SUBOPTIMAL SULPHATION SULPHONATE SUPERATION SUPERATOMS SUPINATION SUPINATORS SUPRAOPTIC SWEATPROOF SWEATSHOPS SWOOPSTAKE SYCOPHANTS SYMPOSIAST SYNCOPATED SYNCOPATES SYNCOPATOR SYNOPTICAL TABLESPOON TALBOTYPES TALLYSHOPS TAMPONADES TAMPONAGES TEICHOPSIA TELOPHASES TELOPHASIC TETRAPOLIS TETRASPORE TOMOGRAPHS TONOPLASTS TOOTHPASTE TOPAGNOSES TOPAGNOSIA TOPAGNOSIS TOPARCHIES TOPHACEOUS TOPIARISTS TOPMAKINGS TOPOGRAPHS TOWNSCAPED TOWNSCAPES TOXAPHENES TOXOPLASMA TRAMPOLINS TRANSPOLAR TRANSPORTS TRANSPOSAL TRANSPOSED TRANSPOSER TRANSPOSES TRANSPOSON TRAPEZOIDS TREPONEMAS TRITANOPES TROPARIONS TROPHESIAL TROPOPAUSE TROPOTAXES TROPOTAXIS TUBOPLASTY TYPHACEOUS TYPOGRAPHS TYPOMANIAS TYROPITTAS UNPASTORAL USUCAPTION USURPATION USURPATORY UTOPIANISE UTOPIANISM VALPROATES VAPORETTOS VAPOROSITY VAPOURIEST VIDEOTAPES VITASCOPES WAITPERSON WALLPOSTER WATERPOXES WATERSPOUT XANTHOPSIA ZAPATEADOS ZAPOTILLAS ZELOTYPIAS ZOOPATHIES ZOOPLASTIC ZOOTHAPSES ZOOTHAPSIS