There are 708 eight-letter words containing A, I, P and R, https://www.bestwordlist.com/c/a/4/8letterwordswithaipr.htm
ADSCRIPT AGITPROP AGRAPHIA AGRAPHIC AGRYPNIA AIRDROPS AIRGRAPH
AIRPARKS AIRPLANE AIRPLAYS AIRPORTS AIRPOSTS AIRPOWER AIRPROOF
AIRSCAPE AIRSHIPS AIRSPACE AIRSPEED AIRSTOPS AIRSTRIP AMPHORIC
ANTIPORN ANTIRAPE APERIENT APERITIF APHORISE APHORISM APHORIST
APHORIZE APIARIAN APIARIES APIARIST APOCRINE APORETIC APPAIRED
APPERILL APPERILS APPLIERS APPRAISE APPRISED APPRISER APPRISES
APPRIZED APPRIZER APPRIZES APRACTIC APRAXIAS APRICATE APRICOCK
APRICOTS APRONING APTERISM APTERIUM APYRETIC APYREXIA ARAPAIMA
ARPEGGIO ASPARTIC ASPERITY ASPERMIA ASPHERIC ASPIRANT ASPIRATA
ASPIRATE ASPIRERS ASPIRING ASPIRINS ATROPHIA ATROPHIC ATROPIAS
ATROPINE ATROPINS ATROPISM BAGPIPER BAPTISER BAPTIZER BARDSHIP
BEDIAPER BEPRAISE BIOGRAPH BIPAROUS BIPARTED BRAINPAN CALIPERS
CALLIPER CAMPFIRE CAMPHIRE CANTRAIP CANTRIPS CAPERING CAPOEIRA
CAPONIER CAPRICCI CAPRICES CAPRIFIG CAPRIOLE CAPRYLIC CARPALIA
CARPINGS CARPLIKE CARSPIEL CASSPIRS CECROPIA CHAMPIER CHAPITER
CHAPPIER CHARPAIS CHARPIES CLIPARTS COPREMIA CRAMPIER CRAMPING
CRAMPITS CRANKPIN CRAPIEST CRAPPIER CRAPPIES CRAPPING CRISPATE
CYPRIANS DEPRIVAL DESPAIRS DIAGRAPH DIAPERED DIAPIRIC DIASPORA
DIASPORE DIDAPPER DIGRAPHS DIOPTRAL DIPTERAL DIPTERAN DIPTERAS
DISPARKS DISPARTS DISPREAD DRAPIERS DRAPIEST DRAPPIES DRAPPING
DREPANID EARLSHIP EARPICKS EARPIECE EMPAIRED EMPAIRES EMPARING
EPACRIDS EPICARPS EPIDURAL EPIGRAMS EPIGRAPH EPILATOR ESPALIER
EUPATRID EUPHORIA EXPIATOR EXPIRANT FIREDAMP FIREPANS FIRETRAP
FLAPPIER FRAPPING GARPIKES GEROPIGA GIFTWRAP GRAMPIES GRAPHICS
GRAPHING GRAPHITE GRAPHIUM GRAPIEST GRAPLINE GRAPLINS GRASPING
GRIPSACK GRIPTAPE HAIRCAPS HAIRGRIP HAIRPINS HANDGRIP HARDSHIP
HARELIPS HARPINGS HARPISTS HEPARINS HIPPARCH IGARAPES IMPACTER
IMPACTOR IMPAIRED IMPAIRER IMPALERS IMPARITY IMPARKED IMPARLED
IMPARTED IMPARTER IMPEARLS IMPERIAL IMPRESAS INTERLAP ISOGRAPH
JAPERIES KIDNAPER LAMPYRID LAPIDARY LEMPIRAS LIPARITE LIPOGRAM
LIPREADS LIPURIAS LIVETRAP MARIPOSA MARSUPIA MARZIPAN MERICARP
MEROPIAS MICROCAP MINIPARK MISPARSE MISPARTS MORPHIAS MYRIAPOD
NAPERIES NAPIFORM OILPAPER OPERATIC OPHIURAN OPHIURAS ORPHICAL
OVERPAID PACIFIER PAGURIAN PAGURIDS PAILLARD PAINTERS PAINTIER
PAINTURE PAIRIALS PAIRINGS PAIRWISE PAITRICK PALIFORM PALIKARS
PALLIARD PALLIDER PALMIERS PALTRIER PALTRILY PANARIES PANBROIL
PANFRIED PANFRIES PANNIERS PANTRIES PAPERIER PAPERING PAPILLAR
PAPRICAS PAPRIKAS PAPYRIAN PAPYRINE PARADIGM PARADING PARADISE
PARAFFIN PARAFOIL PARAKITE PARANOIA PARANOIC PARANOID PARASAIL
PARASITE PARAVAIL PARAWING PARAXIAL PARBOILS PARCHESI PARCHING
PARCHISI PARDALIS PARECISM PAREIRAS PARETICS PARFAITS PARGINGS
PARHELIA PARHELIC PARIETAL PARIETES PARISHAD PARISHEN PARISHES
PARISONS PARITIES PARITORS PARKIEST PARKINGS PARKLIKE PAROCHIN
PARODIED PARODIES PARODIST PAROEMIA PAROLING PAROSMIA PAROTIDS
PAROTOID PAROUSIA PARPOINT PARRIDGE PARRIERS PARRITCH PARRYING
PARSINGS PARSLIED PARSNIPS PARSONIC PARTIALS PARTIBLE PARTICLE
PARTIERS PARTIEST PARTINGS PARTISAN PARTITAS PARTIZAN PARTYING
PARTYISM PARVISES PARVOLIN PASTRAMI PASTRIES PASTROMI PATCHIER
PATRIALS PATRIATE PATRICKS PATRICOS PATRIOTS PAVIOURS PAVISERS
PAYNIMRY PEABRAIN PEACHIER PEARCING PEARLIER PEARLIES PEARLING
PEARLINS PEARLITE PEARMAIN PECULIAR PEDALIER PEDRAILS PELORIAN
PELORIAS PERACIDS PEREIRAS PERIAGUA PERIANTH PERIAPTS PERICARP
PERIDIAL PERIGEAL PERIGEAN PERILLAS PERINEAL PERISARC PERRADII
PERTAINS PERVIATE PETARIES PETIOLAR PHARISEE PHARMING PHRASIER
PHRASING PHRATRIC PHREATIC PIACULAR PIAFFERS PIARISTS PIASTERS
PIASTRES PICADORS PICAMARS PICARIAN PICAROON PICLORAM PICOGRAM
PICRATED PICRATES PICTURAL PIERAGES PIERHEAD PILASTER PILCHARD
PILLAGER PILLARED PINAFORE PINASTER PINBOARD PINDAREE PINDARIS
PINGRASS PINNULAR PIRACIES PIRAGUAS PIRANHAS PIRARUCU PIRATING
PISCATOR PITARAHS PIZZERIA PLACIDER PLAGIARY PLAGUIER PLAISTER
PLAITERS PLANARIA PLANURIA PLASHIER PLAYGIRL PLIOSAUR PLUMERIA
POACHIER PODAGRIC PODIATRY POLARISE POLARITY POLARIZE POLYURIA
PONIARDS PORTRAIT POTICARY PRACTICE PRACTICK PRACTICS PRACTISE
PRACTIVE PRAECIPE PRAEDIAL PRAIRIED PRAIRIES PRAISERS PRAISING
PRALINES PRANCING PRANDIAL PRANGING PRANKIER PRANKING PRANKISH
PRATINGS PRATIQUE PRATTING PRAWLINS PRAWNING PRAXISES PRAYINGS
PREACING PREADMIT PREASING PREAUDIT PREAXIAL PREDIALS PREFIXAL
PRELATIC PRERADIO PRESIDIA PRETRAIN PRETRIAL PREVAILS PRIAPEAN
PRIAPISM PRIMAGES PRIMALLY PRIMATAL PRIMATES PRIMATIC PRIMEVAL
PRIMULAS PRIORATE PRISAGES PRISTANE PRIVADOS PRIVATER PRIVATES
PRIZABLE PRIZEMAN PROCAINE PROCHAIN PROCLAIM PRODIGAL PROEMIAL
PROGERIA PROLAMIN PROSAISM PROSAIST PROTAMIN PROTASIS PROTATIC
PROVIANT PROVIRAL PROXIMAL PRUSSIAN PTARMICS PTERYGIA PULVINAR
PUPARIAL PUPARIUM PUPILARY PUPILLAR PURITANS PURSLAIN PURTRAID
PYRALIDS PYRAMIDS PYRANOID PYREXIAL PYREXIAS RAINDROP RAJASHIP
RALPHING RAMPICKS RAMPIKES RAMPINGS RAMPIONS RAMPIRED RAMPIRES
RANPIKES RAPACITY RAPHANIA RAPHIDES RAPIDEST RAPIDITY RAPIERED
RAPPINGS RARERIPE RASPIEST RASPINGS RATHRIPE REAPINGS REPACIFY
REPAINTS REPAIRED REPAIRER REPAVING REPAYING REPLICAS REPRISAL
REPTILIA RETAPING RHAPHIDE RHOPALIC RIFAMPIN RIPARIAL RIPARIAN
RIPPABLE RIPSAWED ROANPIPE SAMPHIRE SAMPIRES SAPPHIRE SAPREMIA
SAPREMIC SAPROBIC SCARFPIN SCARPING SCRAPIES SCRAPING SEPTARIA
SEPTORIA SERAPHIC SERAPHIM SERAPHIN SHARPIES SHARPING SHARPISH
SHIPYARD SLIPRAIL SLIPWARE SNAPPIER SPAGERIC SPAGIRIC SPAGYRIC
SPAIRGED SPAIRGES SPAMMIER SPANDRIL SPARAXIS SPARERIB SPARGING
SPARKIER SPARKIES SPARKILY SPARKING SPARKISH SPARLIKE SPARLING
SPAROIDS SPARRIER SPARRING SPARSITY SPARTINA SPAWNIER SPEARIER
SPEARING SPHAIREE SPICULAR SPIRACLE SPIRAEAS SPIRALED SPIRALLY
SPIRANTS SPIRATED SPIRILLA SPIRULAE SPIRULAS SPORADIC SPORIDIA
SPRAINED SPRAINTS SPRAYIER SPRAYING SPRINGAL STARSHIP STIPULAR
SWAMPIER SYRPHIAN TAPERING TAPIROID TARSIPED TERAPHIM TERRAPIN
THREAPIT TIPCARTS TOPRAILS TRAIPSED TRAIPSES TRAMPIER TRAMPING
TRAMPISH TRANSHIP TRAPEZIA TRAPEZII TRAPLIKE TRAPLINE TRAPPIER
TRAPPING TRAPSING TRIAPSAL TRIGRAPH TRIPACKS TRIPEDAL TRIPHASE
TRIPLANE TRIPODAL TRIPPANT TRIPTANE TRIPTANS TRIPTYCA TRIPUDIA
TROOPIAL TROPARIA TROPICAL TROUPIAL TYROPITA ULTRAHIP UMPIRAGE
UNIPOLAR UNPAIRED UNPRAISE UNREPAID UNREPAIR UPBRAIDS UPRAISED
UPRAISER UPRAISES UPRATING UPRISALS UPSTAIRS UPTRAINS UROPYGIA
VALPROIC VAMPIRED VAMPIRES VAMPIRIC VAPORIER VAPORING VAPORISE
VAPORISH VAPORIZE VARITYPE VESPIARY VIVIPARA VIVIPARY WARDSHIP
WARPAINT WARPINGS WARPWISE WARSHIPS WHIPRAYS WIRETAPS WRAPPING
XERAPHIN