There are 447 thirteen-letter words containing A, L, 2R and T, https://www.bestwordlist.com/c/a/5/13letterwordswithalrrt.htm
ACCELEROMETER ACRYLONITRILE AGRICULTURIST ALSTROEMERIAS ANTHROPOLATRY
ANTIDIARRHEAL ANTIGUERRILLA APPROPRIATELY ARAEOMETRICAL ARBITRATIONAL
ARBORICULTURE ARCHITECTURAL ARTERIALISING ARTERIALIZING ARTHRITICALLY
ASTROMETRICAL BLACKCURRANTS BLAMEWORTHIER BRAGGARTLIEST BRAILLEWRITER
BREATHALYSERS BREATHALYZERS CALORIMETRIES CHARACTERLESS CHARLATANRIES
CHLORARGYRITE CIRCULARITIES CIRCUMSTELLAR COLLABORATORS CONGLOMERATOR
CONGRATULATOR CONTRALATERAL CONTRARIOUSLY CONTROVERSIAL COREFERENTIAL
CORPORALITIES CORPOREALISTS CORRELATIONAL CORRELATIVELY CORRELATIVITY
COUNTERPLAYER CRINICULTURAL CRYSTALLISERS CRYSTALLIZERS CYBERSTALKERS
DECLARATORILY DEFIBRILLATOR DENDROLATRIES DEPRECATORILY DETERRABILITY
DIRECTORIALLY DRAMATURGICAL EDITORIALISER EDITORIALIZER ELABORATORIES
ELECTRODERMAL ELECTROGRAPHS ELECTROGRAPHY ELECTROPLATER ELEUTHERARCHS
EQUILIBRATORS EQUILIBRATORY ERYTHROBLASTS EUROTERMINALS EXPURGATORIAL
EXTEMPORARILY EXTERRITORIAL EXTRACELLULAR EXTRALIMITARY EXTRALITERARY
EXTRAMETRICAL EXTRAPOLATORS EXTRAPOLATORY EXTRATROPICAL EXTRAVASCULAR
FLAMETHROWERS FLORICULTURAL FLUTTERBOARDS FORETRIANGLES FORMULARISTIC
FRAGMENTARILY FRATERNALISMS FREEHEARTEDLY FRUSTRATINGLY GALACTORRHEAS
GALACTORRHOEA GLYPTOGRAPHER GRANDFATHERLY GRANDMOTHERLY GRANDPARENTAL
GRANULARITIES GRAVIMETRICAL GROSSULARITES GUBERNATORIAL HAIRSPLITTERS
HARDHEARTEDLY HEARTBROKENLY HETEROTHERMAL HIEROCRATICAL HORRIPILATING
HORRIPILATION HORTICULTURAL HYDROMETRICAL HYGROMETRICAL HYPERCRITICAL
HYPERMETRICAL HYPERRATIONAL HYPERREALISTS IMMORTALISERS IMMORTALIZERS
IMPERTURBABLE IMPERTURBABLY INFORMATORILY INTERCALARIES INTERCALARILY
INTERCELLULAR INTERCOLUMNAR INTERCORTICAL INTERCULTURAL INTERGRANULAR
INTERJECTURAL INTERLAYERING INTERLINEARLY INTERMARGINAL INTERMUSCULAR
INTERNEURONAL INTEROPERABLE INTERORBITALS INTERPARIETAL INTERPARTICLE
INTERPELLATOR INTERPERSONAL INTERPETIOLAR INTERPILASTER INTERPLEADERS
INTERPOLATERS INTERPOLATORS INTERPRETABLE INTERPRETABLY INTERPROXIMAL
INTERQUARTILE INTERRACIALLY INTERRADIALLY INTERREGIONAL INTERRELATING
INTERRELATION INTERSCAPULAR INTERSIDEREAL INTERSPERSALS INTERSTELLARY
INTERTERMINAL INTERTROPICAL INTRACAPSULAR INTRACELLULAR INTRACEREBRAL
INTRADERMALLY INTRAMUSCULAR INTRAOCULARLY INTRAPARIETAL INTRAPERSONAL
INTRAPETIOLAR INTRATELLURIC INTRAVASCULAR INTRAVERSABLE IRRATIONALISE
IRRATIONALISM IRRATIONALIST IRRATIONALITY IRRATIONALIZE IRRETRIEVABLE
IRRETRIEVABLY IRREVERENTIAL IRRITABLENESS LAEVOROTATORY LATEROVERSION
LAUGHWORTHIER LITHOGRAPHERS MARICULTURIST MARTYROLOGIES MARTYROLOGIST
MATERIALISERS MATERIALIZERS MATRICULATORS MATRICULATORY MERCURIALISTS
METACERCARIAL MICROCRYSTALS MICROCULTURAL MICROMETRICAL MICROPARTICLE
MULTIBARRELED MULTIVIBRATOR NARRATOLOGIES NARRATOLOGIST NEANDERTALERS
NEANDERTHALER NONREGULATORY NONRETRACTILE NONRETURNABLE NONSTRUCTURAL
NORTHEASTERLY ORACULARITIES ORCHESTRALIST OVERALERTNESS OVEREARNESTLY
OVERELABORATE OVERREGULATED OVERREGULATES PALAEOCURRENT PARANORMALITY
PARLIAMENTARY PARTICLEBOARD PARTICOLOURED PARTICULARISE PARTICULARISM
PARTICULARIST PARTICULARITY PARTICULARIZE PATRIARCHALLY PATRILINEARLY
PERAMBULATORS PERAMBULATORY PERDURABILITY PERIPHERALITY PERLUSTRATING
PERLUSTRATION PERMACULTURES PLASTERBOARDS PLATYRRHINIAN POLARIMETRIES
POLYARTHRITIS PRAEFECTORIAL PRALLTRILLERS PREAMBULATORY PRECEPTORIALS
PRECOPULATORY PREFATORIALLY PREFERABILITY PREFLORATIONS PREFORMULATED
PREFORMULATES PREHISTORICAL PREINDUSTRIAL PRELITERACIES PREPARATIVELY
PREPARATORILY PREROGATIVELY PRESBYTERIALS PRETERNATURAL PRIMORDIALITY
PROCATHEDRALS PROCREATIONAL PROCURATORIAL PROGENITORIAL PROLETARIATES
PROLIFERATING PROLIFERATION PROLIFERATIVE PRONUCLEARIST PROPORTIONALS
PROPRAETORIAL PROPRIETARILY PROPRIETORIAL PROSECUTORIAL PROTONOTARIAL
PROTUBERANTLY PROVERBIALIST PTERYLOGRAPHY PURGATORIALLY QUADRILATERAL
QUADRILITERAL QUARTERFINALS QUARTERLIGHTS RADIOTELEGRAM RAREFACTIONAL
RATIONALISERS RATIONALIZERS RATTLEBRAINED REACCELERATED REACCELERATES
REALPOLITIKER REARTICULATED REARTICULATES REBARBATIVELY RECALCITRANCE
RECALCITRANCY RECALCITRANTS RECALCITRATED RECALCITRATES RECALIBRATING
RECALIBRATION RECENTRALIZED RECENTRALIZES RECIPROCALITY RECIRCULATING
RECIRCULATION RECRYSTALLISE RECRYSTALLIZE RECTANGULARLY RECTILINEARLY
REEXPLORATION REFERENTIALLY REFLECTOGRAMS REFLECTOGRAPH REFORMABILITY
REFORMATIONAL REFORMULATING REFORMULATION REHABILITATOR REITERATIVELY
RELUBRICATING RELUBRICATION REMARKABILITY REMATERIALISE REMATERIALIZE
REMILITARISED REMILITARISES REMILITARIZED REMILITARIZES REMONSTRANTLY
RENSSELAERITE REPAIRABILITY REPORTORIALLY REPRESENTABLE REPROBATIVELY
REREGULATIONS RESPIRABILITY RESPIRATIONAL RESTORATIVELY RETRANSLATING
RETRANSLATION RETROACTIVELY RETROPHILIACS RETURNABILITY REVERBERANTLY
REVERENTIALLY REVOLUTIONARY ROLLERCOASTER RUDIMENTARILY RURALISATIONS
RURALIZATIONS SCLERODERMATA SCLEROTHERAPY SCRIPTURALISM SCRIPTURALIST
SPIRITUALISER SPIRITUALIZER SPORTSMANLIER STEAMROLLERED STEREOREGULAR
STREETWALKERS STRUCTURALISE STRUCTURALISM STRUCTURALIST STRUCTURALIZE
SUBLITERATURE SUBSTRUCTURAL SUBTERNATURAL SUBTRIANGULAR SUPERCRITICAL
SUPERFRONTALS SUPERNATURALS SUPERPARTICLE SUPERREALISTS SUPRARATIONAL
SUPRATEMPORAL SYNARTHRODIAL TELEMARKETERS TEMERARIOUSLY TERPSICHOREAL
TERRESTRIALLY TERRITORIALLY TETARTOHEDRAL TETRACHLORIDE TETRAFLUORIDE
TETRAHEDRALLY TETRAPYRROLES THERIOLATRIES THERMONUCLEAR TORRENTIALITY
TRAILBREAKERS TRANQUILISERS TRANQUILIZERS TRANQUILLISER TRANQUILLIZER
TRANSCRIBABLE TRANSCULTURAL TRANSDERMALLY TRANSFERRABLE TRANSFERRIBLE
TRANSFORMABLE TRANSLATORIAL TRANSLITERATE TRANSPARENTLY TRANSPERSONAL
TRANSPLANTERS TRANSPORTABLE TRANSPORTEDLY TRANSURETHRAL TRANSVERSALLY
TRAPEZOHEDRAL TREACHEROUSLY TRIANGULARITY TRICARBOXYLIC TRICARPELLARY
TRILATERALISM TRILATERALIST TRILATERATION TRILITERALISM TRILLIONAIRES
TRITUBERCULAR TROUBLEMAKERS TURBELLARIANS ULTRACRITICAL ULTRAFAMILIAR
ULTRAFILTERED ULTRAFILTRATE ULTRALIBERALS ULTRAMARATHON ULTRAORTHODOX
ULTRAPOWERFUL ULTRARADICALS ULTRARAREFIED ULTRARATIONAL ULTRAREALISMS
ULTRAREALISTS ULTRARELIABLE ULTRARIGHTISM ULTRARIGHTIST ULTRAROMANTIC
ULTRAROYALIST ULTRAVIRILITY UNCORRECTABLE UNRETURNABLES UNTERRESTRIAL
UNTRAVERSABLE UNWARRANTABLE UNWARRANTABLY UNWARRANTEDLY VELOCIRAPTORS
VENTROLATERAL VERNACULARIST VERNACULARITY VITREORETINAL WATERCOLORIST
WHOREMASTERLY WOOLGATHERERS