There are 575 nine-letter words containing A, D, I and P, https://www.bestwordlist.com/c/a/4/9letterwordswithadip.htm
ACIDOPHIL ACTINOPOD ADAPTIONS ADEMPTION ADIAPHORA ADIPOCERE ADIPOCYTE
ADIPOSITY ADOPTIONS ADOPTIOUS ADSCRIPTS AIRSPEEDS ALOPECOID AMIDSHIPS
AMPHIPODS AMPLIDYNE AMPLIFIED AMPLITUDE ANEUPLOID ANGUIPEDE ANGUIPEDS
ANTIPODAL ANTIPODES APARTHEID APERIODIC APHETISED APHETIZED APHICIDES
APHIDIANS APHIDIOUS APHORISED APHORIZED APHRODITE APODICTIC APPENDING
APPETISED APPETIZED APPLIQUED APPOINTED APPRAISED APRICATED APSIDIOLE
APTITUDES ASCLEPIAD ASPHYXIED ASPIDIOID ASPIRATED ATROPHIED AUDIOPHIL
AUDIOTAPE AUDIPHONE AUTOPSIED BARDSHIPS BEDIAPERS BEDRAPING BEPAINTED
BEPRAISED BIPEDALLY BIPYRAMID BITMAPPED CADETSHIP CALIPERED CAMPODEID
CANDLEPIN CAPITATED CAPONISED CAPONIZED CAPRIFIED CAPRIOLED CAPTAINED
CAPTIONED CARBIDOPA CHIPBOARD CISPADANE CLIPBOARD COMPANIED COMPENDIA
CRISPATED CRISPHEAD CRYPTADIA CUSPIDATE DAMPENING DANDIPRAT DAUPHINES
DAYSPRING DEANSHIPS DECAMPING DEIPAROUS DELAPSING DELAPSION DELPHINIA
DEPAINTED DEPARTING DEPILATED DEPILATES DEPILATOR DEPLANING DEPRAVING
DEPRAVITY DEPRIVALS DESPAIRED DESPAIRER DESPISALS DIAGLYPHS DIAGRAPHS
DIAPASONS DIAPAUSED DIAPAUSES DIAPENTES DIAPERING DIAPHONES DIAPHONIC
DIAPHRAGM DIAPHYSES DIAPHYSIS DIAPIRISM DIAPYESES DIAPYESIS DIAPYETIC
DIASCOPES DIASPORAS DIASPORES DIASPORIC DIATROPIC DIAZEPAMS DIDAPPERS
DIGIPACKS DIGRAPHIC DIOPTASES DIOPTRATE DIPLEGIAS DIPLOMACY DIPLOMAED
DIPLOMATA DIPLOMATE DIPLOMATS DIPLONEMA DIPLOPIAS DIPTERANS DISAPPEAR
DISPACING DISPARAGE DISPARATE DISPARITY DISPARKED DISPARTED DISPAUPER
DISPEACES DISPERSAL DISPLACED DISPLACER DISPLACES DISPLANTS DISPLAYED
DISPLAYER DISPLEASE DISPOSALS DISPRAISE DISPREADS DISPROVAL DISPUTANT
DISREPAIR DISSIPATE DOGNAPING DOPAMINES DRAGSTRIP DRAINPIPE DRAPERIED
DRAPERIES DREPANIDS DREPANIUM DROPSICAL DUPLICAND DUPLICATE DYSPEPSIA
DYSPHAGIA DYSPHAGIC DYSPHASIA DYSPHASIC DYSPHONIA DYSPHORIA DYSPLASIA
DYSPRAXIA DYSPRAXIC DYSTOPIAN DYSTOPIAS EAVESDRIP EIDOGRAPH EPEDAPHIC
EPICARDIA EPICEDIAL EPICEDIAN EPIDERMAL EPIDURALS EPISODIAL EPITAPHED
EQUIPAGED EUPATRIDS EUPHAUSID EXPANDING EXPLAINED FILOPODIA FIREDAMPS
FLIPBOARD GLIDEPATH GUARDSHIP HANDGRIPS HANDICAPS HANDPICKS HANDPRINT
HANDSPIKE HAPLOIDIC HARDSHIPS HEADPIECE HEADSHIPS HEPATISED HEPATIZED
HEXAPLOID HEXAPODIC HIPPODAME HYPERACID HYPERARID HYPNOIDAL ICECAPPED
IDEOGRAPH IDIOGRAPH IDIOPATHY IDIOPLASM IMPAINTED IMPANELED IMPASTOED
IMPAVIDLY IMPEACHED IMPEARLED IMPEDANCE IMPLANTED IMPLEADED IMPLEADER
INCLASPED INSPANNED INWRAPPED ISOPODANS JAPANISED JAPANIZED JASPIDEAN
KIDNAPEES KIDNAPERS KIDNAPING KIDNAPPED KIDNAPPEE KIDNAPPER KLIPDASES
LADYSHIPS LAIRDSHIP LAMPADIST LAMPYRIDS LANDSKIPS LANDSLIPS LAPIDATED
LAPIDATES LAPIDEOUS LAPIDIFIC LAPIDISTS LEPORIDAE LIPREADER MEROPIDAN
MIDSPACES MINDSCAPE MISADAPTS MISHAPPED MISPARSED MISPARTED MISPLACED
MISPLAYED MISPLEADS MISSHAPED MISSPACED MONOPODIA MYRIAPODS NAUPLIOID
NEPHRIDIA NYMPHALID OCTAPLOID OCTAPODIC OEDIPALLY OLYMPIADS OMPHALOID
OPACIFIED OPHIDIANS OPPILATED OVERPLAID PACTIONED PADDLINGS PADISHAHS
PADRONISM PAEDEUTIC PAEDIATRY PAGANISED PAGANIZED PAGINATED PAGODITES
PAIDEUTIC PAILLARDS PALINODES PALISADED PALISADES PALLADIUM PALLIARDS
PALLIATED PALLIDEST PALLIDITY PALMIPEDE PALMIPEDS PALUDINAL PALUDISMS
PANDARING PANDATION PANDEMIAN PANDEMIAS PANDEMICS PANDERING PANDERISM
PANELISED PANELIZED PANFISHED PANNIERED PANOPLIED PAPALISED PAPALIZED
PARADIGMS PARADISAL PARADISES PARADISIC PARAGLIDE PARAMEDIC PARANOIDS
PARAPODIA PARBOILED PARDONING PARISHADS PARODICAL PARODISTS PARODYING
PAROTIDES PAROTOIDS PARRICIDE PARRIDGES PARTRIDGE PARULIDES PASSEPIED
PASSIONED PATIENTED PATINATED PATINISED PATINIZED PATRIATED PATRICIDE
PEARLISED PEARLIZED PEDAGOGIC PEDALIERS PEDALLING PEDANTISE PEDANTISM
PEDANTIZE PEDATIFID PEDIATRIC PEDICULAR PEDIPALPI PEDIPALPS PEDLARIES
PEDOCALIC PENALISED PENALIZED PEPONIDAS PEPTIDASE PERIDINIA PERIODATE
PERRADIAL PERRADIUS PERTAINED PERVADING PERVIATED PETALODIC PHACOIDAL
PHALANGID PHILANDER PHYLLODIA PICADILLO PICADORES PICCADILL PICKADILL
PICKADILS PICOFARAD PICOWAVED PIERHEADS PIGHEADED PIGTAILED PILCHARDS
PILLHEADS PILONIDAL PINACOIDS PINAFORED PINAKOIDS PINBALLED PINBOARDS
PINDAREES PINELANDS PINHEADED PINNACLED PINTADERA PINTADOES PINTAILED
PISSHEADS PIXELATED PIXILATED PLACIDEST PLACIDITY PLAIDINGS PLANESIDE
PLANETOID PLANISHED PLANULOID PLASMODIA PLASMOIDS PLATINOID PLATITUDE
PLAYFIELD PLEADINGS PODIATRIC POINADOES POLARISED POLARIZED POLYACIDS
POLYAMIDE PONIARDED POSIGRADE PRACTICED PRACTISED PRAEDIALS PRAELUDIA
PRAESIDIA PREADAMIC PREADMITS PREAUDITS PREDACITY PREDATING PREDATION
PREDATISM PREDATIVE PREDICANT PREDICATE PREDIKANT PREFADING PRELUDIAL
PREORDAIN PRESIDIAL PREVAILED PRIMORDIA PRINTHEAD PRIVADOES PRODIGALS
PROSODIAL PROSODIAN PSALMODIC PSEUDAXIS PTYALISED PTYALIZED PUMICATED
PYCNIDIAL PYINKADOS PYRALIDID PYRAMIDAL PYRAMIDED PYRAMIDES PYRAMIDIA
PYRAMIDIC PYRAMIDON PYRIDOXAL QUADRICEP RAINDROPS RAMPICKED RAPIDNESS
REAPPLIED REDISPLAY REPAINTED REPRIMAND REPUDIATE RESPADING RHAMPHOID
RHAPHIDES RHAPSODIC RHIPIDATE RIPRAPPED SANDPILES SANDPIPER SANDSPITS
SAPIDLESS SAPIDNESS SAPODILLA SAPPHIRED SATINPODS SCALDSHIP SCAPHOIDS
SEPADDING SHIPBOARD SHIPLOADS SHIPYARDS SIDEPATHS SKALDSHIP SLIPCASED
SPADASSIN SPADEFISH SPADELIKE SPADILLES SPADILLIO SPADILLOS SPANDRILS
SPASMODIC SPECIATED SPERMATID SPIDERMAN SPIKENARD SPIRALLED SPOLIATED
SPONDAICS SPORIDIAL SPREADING SPRINGALD STANDPIPE STAPEDIAL STAPEDIUS
SUPINATED SYMPODIAL SYNAPSIDS TAILPIPED TAPIROIDS TARSIPEDS TEPIDARIA
THERAPSID TINPLATED TRAPEZOID TREPIDANT TYPHOIDAL UNAPPLIED UNDERPAID
UNDRAPING UNHAPPIED UNPAINTED UNPALSIED UNPLAINED UNPLAITED UNPRAISED
UPBRAIDED UPBRAIDER UPDARTING UPDRAWING UPGRADING UPHAUDING UPLANDISH
UPLEADING UPLOADING UPSADAISY UPTRAINED VAPIDNESS VAPORISED VAPORIZED
VARITYPED VIDEOTAPE WAMPISHED WARDSHIPS WHIPSAWED WHITEDAMP WINDPACKS
XIPHOIDAL