There are 569 eleven-letter words containing A, L, P and Y, https://www.bestwordlist.com/c/a/4/11letterwordswithalpy.htm
ACCEPTINGLY ACROPETALLY ALLELOPATHY ALYCOMPAINE AMORPHOUSLY AMPHIBOLOGY
AMPHIPLOIDY AMPHISTYLAR AMPULLOSITY AMYLOPECTIN AMYLOPLASTS ANAGLYPHIES
ANAPHYLAXES ANAPHYLAXIS ANENCEPHALY ANGELOPHANY ANGIOPLASTY ANISOPHYLLY
ANTILEPROSY ANTITYPICAL APHETICALLY APOCALYPSES APOCALYPTIC APOGAMOUSLY
APOPHYLLITE APPALLINGLY APPEALINGLY APPEASINGLY APPLAUDABLY APPLICATORY
APPRECIABLY APPROVINGLY APPULSIVELY ASEPTICALLY ASPERSIVELY ATYPICALITY
AUTOCEPHALY BALLPLAYERS BAPTISMALLY BASIPETALLY BIOPHYSICAL BIPARTITELY
BIPINNATELY BIPYRAMIDAL CALLIGRAPHY CALLIPYGEAN CALLIPYGIAN CALLIPYGOUS
CALOTYPISTS CALYPSONIAN CALYPTROGEN CAMPANOLOGY CAPACIOUSLY CAPILLARITY
CAPITULARLY CARDPLAYERS CEPHALOTOMY CHESSPLAYER CLADOPHYLLS CLAPPERBOYS
CLEPTOCRACY COMPACTEDLY COMPELLABLY COMPILATORY COMPLACENCY COMPLIANTLY
COPLANARITY CORPORALITY CORPORATELY CORPOREALLY COUNTERPLAY CRAPULENTLY
CRAPULOSITY CRAPULOUSLY CRYPTICALLY CULPABILITY CYCLOGRAPHS CYCLOPAEDIA
CYCLOPAEDIC CYCLOPEDIAS CYCLOPLEGIA CYCLOSPORAS CYNOPHILIAS CYTOPLASMIC
CYTOPLASTIC DELPHICALLY DEPRAVINGLY DESPERATELY DIPHYCERCAL DISAPPLYING
DISPARATELY DISPENSABLY DISPLAYABLE DOWNPLAYING DRAPABILITY DROPSICALLY
DUPLICATELY DYSPEPTICAL ECTOPICALLY EDAPHICALLY EMPIRICALLY EMPLOYABLES
EPHEMERALLY EPICYCLICAL EPIPHYTICAL EPISCOPALLY EPITAXIALLY EUCALYPTOLE
EUCALYPTOLS EXCULPATORY EXEMPLARILY EXEMPLARITY EXPANSIVELY EXPECTANTLY
EXPLANATORY EXPLICATORY EXPLORATORY FILMOGRAPHY FINGERPLAYS FLEXOGRAPHY
GENOTYPICAL GEOPHYSICAL GLYPHOGRAPH GLYPHOSATES GLYPTOTHECA GRAPHICALLY
GYPSOPHILAS HAEMOLYMPHS HALOPHYTISM HAPHAZARDLY HAPLOGRAPHY HELIOGRAPHY
HORSEPLAYER HOSPITALITY HYALOPHANES HYALOPLASMS HYDROPLANED HYDROPLANES
HYLOPATHISM HYLOPATHIST HYLOPHAGOUS HYOPLASTRAL HYOPLASTRON HYPALGESIAS
HYPALLACTIC HYPERDACTYL HYPERDULIAS HYPERLYDIAN HYPERPLANES HYPERPLASIA
HYPERSALINE HYPERSEXUAL HYPOAEOLIAN HYPOBLASTIC HYPOCENTRAL HYPOGLOSSAL
HYPOKALEMIA HYPOKALEMIC HYPOPHYSEAL HYPOPHYSIAL HYPOPLASIAS HYPOPLASTIC
HYPOPLASTRA HYPOTHALAMI HYPOTHERMAL IMPARTIALLY IMPASSIVELY IMPATIENTLY
IMPERIALITY IMPERMEABLY IMPLAUSIBLY IMPLORATORY IMPORTANTLY IMPREGNABLY
INCULPATORY INESCAPABLY INSEPARABLY INSUPERABLY INTERPLAYED IRREPARABLY
ITHYPHALLIC ITHYPHALLUS JELLYGRAPHS KARYOLYMPHS KARYOPLASMS KLEPTOCRACY
LAMPROPHYRE LAPAROSCOPY LAPIDIFYING LEPTODACTYL LITHOGRAPHY LITHOLAPAXY
LITHOPHYSAE LYCANTHROPE LYCANTHROPY LYMPHANGIAL LYMPHEDEMAS LYMPHOBLAST
LYMPHOGRAMS LYMPHOPENIA MACROPHYLUM MALACOPHILY MAMMAPLASTY MAMMOPLASTY
MAXIMAPHILY MEGACEPHALY MESOCEPHALY METHYLDOPAS MISAPPLYING MISSHAPENLY
MOULDYWARPS MULTIPARITY MULTIPLAYER MUNICIPALLY MYCOPLASMAL MYCOPLASMAS
MYELOGRAPHY MYELOPATHIC NONPHYSICAL NULLIPARITY NYCTALOPIAS OCCIPITALLY
OPENABILITY OPERABILITY OPERATIVELY OPPUGNANTLY OPTIONALITY OSTEOPLASTY
OVERPLAYING OVIPAROUSLY OXYCEPHALIC PACHYDACTYL PACHYDERMAL PACIFICALLY
PACKABILITY PADDYMELONS PALAEOTYPES PALAEOTYPIC PALEOBOTANY PALEOGRAPHY
PALINGENESY PALLIDOTOMY PALPABILITY PALYNOLOGIC PANEGYRICAL PANTHEOLOGY
PARAKEELYAS PARALDEHYDE PARALYMPICS PARAMOUNTLY PARENCHYMAL PARFOCALITY
PARLEYVOOED PAROCHIALLY PARONYCHIAL PARTIBILITY PARTITIVELY PASSIBILITY
PATRICIANLY PAUSELESSLY PECCABILITY PECTINATELY PECULIARITY PECUNIARILY
PELOTHERAPY PELYCOSAURS PENNYROYALS PENTACYCLIC PENTADACTYL PENTAPLOIDY
PENTASTYLES PERCEIVABLY PERENNIALLY PERINATALLY PERMANENTLY PERPETUALLY
PERSONALITY PERTURBABLY PERVASIVELY PHALANSTERY PHALLICALLY PHARYNGEALS
PHENYLAMINE PHLYCTAENAE PHRASEOLOGY PHYLACTERIC PHYLARCHIES PHYLLOCLADE
PHYLLOCLADS PHYLLOMANIA PHYLLOPLANE PHYLLOTAXES PHYLLOTAXIS PHYLLOXERAE
PHYLLOXERAS PHYSICALISM PHYSICALIST PHYSICALITY PHYSICALIZE PHYSIOLATER
PHYSIOLATRY PHYTOALEXIN PHYTOPLASMA PIACULARITY PICTORIALLY PIGHEADEDLY
PILGARLICKY PIPECLAYING PIRATICALLY PLACABILITY PLACATINGLY PLACELESSLY
PLAINTIVELY PLANETOLOGY PLANIGRAPHY PLANOGRAPHY PLANTOCRACY PLASMOLYSED
PLASMOLYSES PLASMOLYSIS PLASMOLYTIC PLASMOLYZED PLASMOLYZES PLASTICALLY
PLASTOMETRY PLATELAYERS PLATELAYING PLATINOTYPE PLATYFISHES PLATYKURTIC
PLATYRRHINE PLAYABILITY PLAYACTINGS PLAYFELLOWS PLAYFULNESS PLAYGROUNDS
PLAYLEADERS PLAYLISTING PLAYMAKINGS PLAYREADERS PLAYSCHOOLS PLAYWRIGHTS
PLAYWRITING PLEASURABLY PLEURODYNIA POLARIMETRY POLEMICALLY POLICYMAKER
POLITICALLY POLLYANNISH POLYACTINAL POLYACTINES POLYALCOHOL POLYAMORIES
POLYAMORIST POLYAMOROUS POLYANDRIES POLYANDROUS POLYARCHIES POLYBAGGING
POLYBASITES POLYCARPIES POLYCARPOUS POLYCHAETES POLYCHASIUM POLYCLONALS
POLYCRYSTAL POLYDACTYLS POLYDACTYLY POLYDIPSIAS POLYGAMISED POLYGAMISES
POLYGAMISTS POLYGAMIZED POLYGAMIZES POLYGLOTTAL POLYGONALLY POLYGONATUM
POLYGRAPHED POLYGRAPHER POLYGRAPHIC POLYHALITES POLYLINGUAL POLYMASTIAS
POLYMASTICS POLYMASTIES POLYMASTISM POLYMATHIES POLYMERASES POLYNOMIALS
POLYNUCLEAR POLYPHAGIAS POLYPHAGIES POLYPHAGOUS POLYPLOIDAL POLYSEMANTS
POLYSORBATE POLYTONALLY POLYTYPICAL POLYURETHAN POLYVALENCE POLYVALENCY
POLYZOARIAL POLYZOARIES POLYZOARIUM PORTABILITY PORTRAYABLE POSTHOLIDAY
POSTNATALLY POSTULATORY POTENTIALLY PRACTICABLY PRACTICALLY PRAEDIALITY
PRATTLINGLY PRAYERFULLY PREACHINGLY PREAMBULARY PREAPPLYING PREASSEMBLY
PRECOITALLY PREDATORILY PREDICTABLY PREFATORILY PREHOLIDAYS PRELIMINARY
PRELITERACY PRELITERARY PREMATURELY PRESBYTERAL PRESENTABLY PRESERVABLY
PREVALENTLY PREVENTABLY PRIMAEVALLY PRIMATOLOGY PRINCIPALLY PRIVATIVELY
PROACTIVELY PROBABILITY PROBATIVELY PRODIGALITY PROLIFICACY PROMILITARY
PROMYCELIAL PROPHYLAXES PROPHYLAXIS PROPYLAMINE PROSAICALLY PROTANOMALY
PROTOGALAXY PROVABILITY PROXIMATELY PSALIGRAPHY PSYCHEDELIA PSYCHICALLY
PSYCHODELIA PTERODACTYL PTYALAGOGIC PTYALAGOGUE PUERPERALLY PULSATILITY
PULSATIVELY PUNCTUALITY PUPILLARITY PURGATIVELY PYELOGRAPHY PYRAMIDALLY
PYRAMIDICAL PYROBALLOGY PYROCLASTIC PYROGALLATE PYROGALLOLS PYROLATRIES
PYROLYSABLE PYROLYSATES PYROLYZABLE PYROLYZATES PYRRHULOXIA RAPACIOUSLY
RAPTUROUSLY RECTIPETALY REDISPLAYED REPELLANTLY REPENTANTLY REPTILIANLY
REPUGNANTLY RESPECTABLY RHINOPLASTY SCEPTICALLY SCEUOPHYLAX SCREENPLAYS
SEMELPARITY SHAPELESSLY SIALOGRAPHY SKEPTICALLY SLEEPYHEADS SPARKLESSLY
SPARKLINGLY SPASMOLYTIC SPASTICALLY SPECTRALITY SPECULARITY SPECULATORY
SPELAEOLOGY SPHAGNOLOGY SPHERICALLY SPIRITUALLY SPIRITUALTY SPLAYFOOTED
SPORTSMANLY SPREADINGLY STAPHYLINID STAPHYLITIS STAPHYLOMAS STIPULATORY
STYLOGRAPHS STYLOGRAPHY SUPERALLOYS SUPERFAMILY SUPERLAWYER SUPERLUNARY
SUPERPLAYER SUPPLIANTLY SUPPORTABLY SWORDPLAYER SYCOPHANTLY SYLLEPTICAL
SYMPETALIES SYMPETALOUS SYMPODIALLY SYNALOEPHAS SYNSEPALOUS SYPHILOMATA
TELPHERWAYS TEMPERATELY TEMPORALITY TEMPORARILY TETRAPLOIDY THALLOPHYTE
TOPONYMICAL TROPHICALLY TROPICALITY TYPICALNESS TYPOLOGICAL UNDERPLAYED
UNESCAPABLY UNFLAPPABLY UNIPOLARITY UNPALATABLY UNPLAUSIBLY UNPOPULARLY
UNPRINTABLY UNSPARINGLY UNSPEAKABLY UNSTOPPABLY UNTYPICALLY URANOPLASTY
VAPOURINGLY XANTHOPHYLL XANTHOPHYLS XYLOCARPOUS XYLOGRAPHED XYLOGRAPHER
XYLOGRAPHIC XYLOPHAGANS XYLOPHAGOUS ZOOPHYTICAL ZYGOPLEURAL