There are 496 eleven-letter words containing A, I, M, P and R, https://www.bestwordlist.com/c/a/5/11letterwordswithaimpr.htm
ACCOMPANIER ADIAPHORISM ADMIRALSHIP AEROTROPISM AIRMANSHIPS ALLOMORPHIC
ALLOTROPISM AMATEURSHIP AMINOPTERIN AMINOPYRINE AMPHIASTERS AMPHIBRACHS
AMPHICHROIC AMPHIGORIES AMPHIGOURIS AMPHIMACERS AMPHIPROTIC AMPHISTYLAR
AMPHITRICHA AMYOTROPHIC ANAMORPHISM ANGIOSPERMS APODYTERIUM APOMORPHIAS
APOMORPHINE APOTROPAISM APPROXIMATE ARCHIPLASMS ARMIPOTENCE ASPERGILLUM
ASPERSORIUM ASPHETERISM ATMOSPHERIC ATTEMPERING AUTOMORPHIC AZOOSPERMIA
AZOOSPERMIC BIPYRAMIDAL BLEPHARISMS BRACHYPRISM CAMPAIGNERS CAMPANIFORM
CAMPESTRIAN CARPOGONIUM CHAMPERTIES CIRCUMPOLAR COMPARATIST COMPARATIVE
COMPARISONS COMPATRIOTS COMPILATORS COMPILATORY COMPLAINERS COMPRIMARIO
COMPRISABLE COMRADESHIP CORPORATISM CRAMPFISHES CRAMPONNING CRYPTARITHM
CRYPTOGAMIC CRYPTOMERIA CYMOGRAPHIC DEMOGRAPHIC DESIPRAMINE DIAMORPHINE
DIAPHRAGMAL DIAPHRAGMED DIATROPISMS DIMERCAPROL DROMOPHOBIA EMANCIPATOR
EMMETROPIAS EMPARADISED EMPARADISES EMPATHIZERS EMPATRONING EMPHRACTICS
EMPIRICALLY EPICARDIUMS EPICHEIREMA EPICRANIUMS EPIGASTRIUM EPIRRHEMATA
EUPATORIUMS EXEMPLARILY EXEMPLARITY FILMOGRAPHY FISSIPARISM FOREMANSHIP
GAMOTROPISM GEMMIPAROUS GERMAPHOBIC GRAMOPHONIC GRAPHOMANIA HALOMORPHIC
HARMONIPHON HARRUMPHING HEMERALOPIA HEMERALOPIC HEMIPTERANS HIPPEASTRUM
HOMOGRAPHIC HYPERAEMIAS HYPERGAMIES HYPERMANIAS HYPERMEDIAS HYPERMNESIA
HYPEROSMIAS HYPERSOMNIA HYPERTHYMIA HYPOCORISMA HYPOTHERMIA IMIPRAMINES
IMPAIRMENTS IMPARADISED IMPARADISES IMPARKATION IMPARLANCES IMPARTATION
IMPARTIALLY IMPARTMENTS IMPENETRATE IMPERATIVAL IMPERATIVES IMPERCEABLE
IMPERFORATE IMPERIALISE IMPERIALISM IMPERIALIST IMPERIALITY IMPERIALIZE
IMPERMANENT IMPERMEABLE IMPERMEABLY IMPERSONATE IMPERVIABLE IMPETRATING
IMPETRATION IMPETRATIVE IMPETRATORS IMPETRATORY IMPIGNORATE IMPLICATURE
IMPLORATION IMPLORATORS IMPLORATORY IMPORTANCES IMPORTANTLY IMPORTATION
IMPORTUNACY IMPORTUNATE IMPRACTICAL IMPRECATING IMPRECATION IMPRECATORY
IMPREGNABLE IMPREGNABLY IMPREGNANTS IMPREGNATED IMPREGNATES IMPREGNATOR
IMPRESARIOS IMPRIMATURS IMPROBATION IMPROPRIATE IMPROVISATE INTEMPERANT
INTEMPERATE INTERCAMPUS INTRAPARTUM INWRAPMENTS IPRATROPIUM ISOMETROPIA
KYMOGRAPHIC LAGOMORPHIC LAMPADARIES LAMPLIGHTER LAPILLIFORM LEPROSARIUM
MACROCOPIES MACROPHAGIC MACROPHYTIC MACROPRISMS MACROSCOPIC MADREPORIAN
MADREPORITE MAINPERNORS MAINPRISING MAINSPRINGS MALAPROPIAN MALAPROPISM
MALAPROPIST MALPRACTICE MANAGERSHIP MANCIPATORY MANIPULATOR MANSPLAINER
MANUSCRIPTS MARLINSPIKE MARSHALSHIP MARZIPANNED MASSPRIESTS MASTERPIECE
MASTERSHIPS MATRONSHIPS MERCAPTIDES METAMORPHIC METANEPHRIC METANEPHROI
METAPHORIST METAPHRASIS METAPROTEIN MICROAMPERE MICROCEPHAL MICROGRAPHS
MICROGRAPHY MICROPHAGES MILLIAMPERE MIMEOGRAPHS MIMOGRAPHER MISANTHROPE
MISANTHROPY MISPERSUADE MISPHRASING MISPRAISING MISPROGRAMS MONOGRAPHIC
MORPHACTINS MULTIPARITY MULTIPAROUS MULTIPLAYER MULTISPIRAL MYOGRAPHIES
MYOGRAPHIST MYRIAPODOUS NAUPLIIFORM NITRAZEPAMS NOMOGRAPHIC OARSMANSHIP
OPHIDIARIUM PACHYDERMIA PACHYDERMIC PALINDROMES PALINDROMIC PALMISTRIES
PANARITIUMS PANCRATIUMS PANDERMITES PANDURIFORM PANICMONGER PANSPERMIAS
PANSPERMIES PANSPERMISM PANSPERMIST PANTRYMAIDS PAPERMAKING PAPILLIFORM
PARABAPTISM PARABEMATIC PARALIMNION PARALLELISM PARALOGISMS PARALYMPICS
PARAMAECIUM PARAMASTOID PARAMECIUMS PARAMEDICAL PARAMEDICOS PARAMETRISE
PARAMETRIZE PARAMNESIAS PARAMOECIUM PARAMORPHIC PARASCENIUM PARASITISMS
PARASOMNIAS PARCIMONIES PARIMUTUELS PARLIAMENTS PARLOURMAID PARMACITIES
PARMIGIANOS PARONOMASIA PARSIMONIES PARTIALISMS PARVANIMITY PASSERIFORM
PASSIMETERS PASTEURISMS PASTORALISM PATELLIFORM PATERNALISM PATRIALISMS
PATRIMONIAL PATRIMONIES PATRIOTISMS PATRONYMICS PELARGONIUM PENTAMERIES
PENTAMERISM PENTAPRISMS PERICARDIUM PERICRANIUM PERIPLASMIC PERISPERMAL
PERISPOMENA PERISTOMIAL PERITONAEUM PERMANGANIC PERMEATIONS PERMILLAGES
PERMITTANCE PERMUTATING PERMUTATION PEROXISOMAL PERSONALISM PHARISAISMS
PHARISEEISM PHARMACISTS PHONOGRAMIC PILGRIMAGED PILGRIMAGER PILGRIMAGES
PLAGIARISMS PLANETARIUM PLANIMETERS PLANIMETRIC PLANOMETRIC PLANULIFORM
PLATFORMING PLEINAIRISM PLUMASSIERS PLUMULARIAN POCKMARKING POLARIMETER
POLARIMETRY POLICYMAKER POLYAMORIES POLYAMORIST POLYZOARIUM POPULARISMS
POSTMARITAL POSTMARKING POSTPRIMARY PRAEMUNIRES PRAENOMINAL PRAESIDIUMS
PRAETORIUMS PRAGMATICAL PRAGMATISED PRAGMATISER PRAGMATISES PRAGMATISMS
PRAGMATISTS PRAGMATIZED PRAGMATIZER PRAGMATIZES PREADAMITES PREADMITTED
PREADMONISH PREDICAMENT PREDOMINANT PREDOMINATE PRELIMINARY PREMARRIAGE
PREMATURITY PREMAXILLAE PREMAXILLAS PREMEDICATE PREMEDIEVAL PREMEDITATE
PRENOMINATE PREROMANTIC PRESTAMPING PRETERMINAL PREVAILMENT PRIMAEVALLY
PRIMALITIES PRIMAQUINES PRIMARINESS PRIMATESHIP PRIMATOLOGY PRIMIGENIAL
PRIMIPARITY PRIMIPAROUS PRIMOGENIAL PRIMORDIALS PRINTMAKERS PRINTMAKING
PRISMATICAL PRISMATOIDS PROBABILISM PROBLEMATIC PROCAMBIUMS PROCLAIMANT
PROCLAIMERS PROCLAIMING PROGNATHISM PROGRAMINGS PROGRAMMING PROGYMNASIA
PROMENADING PROMILITARY PROMOTIONAL PROMYCELIAL PROPYLAMINE PROSAICISMS
PROSEMINARS PROSTATISMS PROTAGONISM PROTHALAMIA PROTHALLIUM PROVITAMINS
PROXIMATELY PROXIMATION PURITANISMS PYRAMIDALLY PYRAMIDICAL PYRAMIDIONS
PYRAMIDISTS PYROMANCIES PYROMANIACS RACTOPAMINE RAMPALLIANS REEMPHASISE
REEMPHASIZE REIMPLANTED REPRIMANDED RHINOPHYMAS RIFAMPICINS SCALPRIFORM
SCAMPERINGS SEISMOGRAPH SEMAPHORING SEMELPARITY SEMIPOPULAR SEMIPRIVATE
SEMPITERNAL SEPARATISMS SHIPMASTERS SLIPSTREAMS SPARAGMATIC SPARGANIUMS
SPERMACETIS SPERMAGONIA SPERMATICAL SPERMICIDAL SPERMOGONIA SPHAERIDIUM
SPINMASTERS SPIRALIFORM STASIMORPHY STRIPAGRAMS STRIPOGRAMS STRIPPAGRAM
SUBPRIMATES SUMATRIPTAN SUPERFAMILY SUPREMACIES SUPREMACISM SUPREMACIST
SUPREMATISM SUPREMATIST SYMPATHISER SYMPATHIZER SYMPOSIARCH TEMPERATING
TEMPERATIVE TEMPORALISE TEMPORALITY TEMPORALIZE TEMPORARIES TEMPORARILY
TIMEPLEASER TOMOGRAPHIC TRAMPOLINED TRAMPOLINER TRAMPOLINES TRAPEZIFORM
TRIPALMITIN TRIPARTISMS TRIPHAMMERS TROPISMATIC TRYPTAMINES TYMPANIFORM
ULTRASIMPLE UNEMPIRICAL UNIMPORTANT UPMARKETING UPSTREAMING VAMPIRISING
VAMPIRIZING VAPORIMETER VIVIPARISMS WORKMANSHIP