There are 484 twelve-letter words containing A, D, I and 2N, https://www.bestwordlist.com/c/a/5/12letterwordswithadinn.htm ABSENTMINDED ADMINISTRANT ADMONISHMENT ADVENTURINGS AGGRANDISING AGGRANDIZING ALEXANDRINES AMMUNITIONED ANDROCENTRIC ANDROCLINIUM ANDROGENESIS ANDROGENETIC ANODISATIONS ANODIZATIONS ANTEDILUVIAN ANTEMERIDIAN ANTEPENDIUMS ANTEPRANDIAL ANTIANDROGEN ANTIDANDRUFF ANTIDILUTION ANTIDUMPINGS ANTIHYDROGEN ANTIOXIDANTS ANTISPENDING APPREHENDING ASCENDANCIES ASCENDENCIES ASTOUNDINGLY ATTENDANCIES BALLHANDLING BANDEIRANTES BANDICOOTING BASTINADOING BLANDISHMENT BONDMANSHIPS BREADWINNERS BREADWINNING BREAKDANCING CALENDERINGS CANDIDNESSES CANNABIDIOLS CANNABINOIDS CANNIBALISED CANNIBALIZED CANTHARIDIAN CANTHARIDINS CARBONADOING CHANDLERINGS CHONDROSTIAN CLINDAMYCINS COADUNATIONS CODOMINANCES COGNOMINATED COINCIDENTAL COMMANDINGLY COMMENDATION CONCERTINAED CONDEMNATION CONDENSATING CONDENSATION CONDITIONALS CONDITIONATE CONDONATIONS CONDUCTIONAL CONFIDENTIAL CONSIDERANCE CONTAMINATED COORDINANCES COORDINATING COORDINATION CORNBRAIDING CORNBRANDIES CROSSBANDING CYANIDATIONS CYANOHYDRINS DAINTINESSES DAMASCEENING DAMASCENINGS DAMASKEENING DAMASQUINING DARINGNESSES DARRAIGNMENT DAUNORUBICIN DEAMINATIONS DEBONAIRNESS DECANTATIONS DECLENSIONAL DECLINATIONS DEFINITIONAL DEGARNISHING DEGENERATING DEGENERATION DEHUMANISING DEHUMANIZING DEINDEXATION DEIONISATION DEIONIZATION DELAMINATING DELAMINATION DELINEATIONS DEMIMONDAINE DEMONIANISMS DEMONISATION DEMONIZATION DEMONOMANIAS DENATURATION DENATURISING DENATURIZING DENERVATIONS DENIGRATIONS DENITRATIONS DENOMINATING DENOMINATION DENOMINATIVE DENOMINATORS DENTILINGUAL DENUNCIATING DENUNCIATION DENUNCIATIVE DENUNCIATORS DENUNCIATORY DEPENDANCIES DERACINATING DERACINATION DERAIGNMENTS DERMAPLANING DESALINATING DESALINATION DESALINISING DESALINIZING DESCENSIONAL DESIGNATIONS DESTINATIONS DETERMINANTS DETRAINMENTS DETRUNCATING DETRUNCATION DIBENZOFURAN DIENCEPHALON DIFUNCTIONAL DIPRIONIDIAN DISADVANCING DISANCHORING DISANIMATING DISANNULLERS DISANNULLING DISANNULMENT DISANOINTING DISARRANGING DISAVAUNCING DISBANDMENTS DISBRANCHING DISCANDERING DISCANDYINGS DISCIPLINANT DISCRIMINANT DISENCHAINED DISENCHANTED DISENCHANTER DISENSLAVING DISENTAILING DISENTANGLED DISENTANGLES DISENTRAINED DISENTRANCED DISENTRANCES DISIMAGINING DISINFECTANT DISINFESTANT DISINFLATION DISMANTLINGS DISPENSATION DISSONANCIES DISTRAINMENT DIVINISATION DIVINIZATION DOCTRINARIAN DODECAGYNIAN DOMINATINGLY DOWNLOADINGS DRACONIANISM DRAGONNADING DRAWLINGNESS DUNNIEWASSAL DUODECENNIAL DYNAMOGENIES EDUTAINMENTS ENCARNALISED ENCARNALIZED ENDEAVOURING ENDORSATIONS ENFRANCHISED ENGARLANDING ENGARRISONED ENTERDEALING FARTHINGLAND FAULTFINDING FECUNDATIONS FORWANDERING FOUNDATIONAL FOUNDATIONER FOUNTAINHEAD FREESTANDING FUNCTIONATED FUNDRAISINGS GANGLIONATED GOALTENDINGS GONADOTROPIN GORMANDISING GORMANDIZING GUANETHIDINE HANDBAGGINGS HANDCRAFTING HANDFASTINGS HANDICAPPING HANDSHAKINGS HANDSTAMPING HANDWRINGERS HANDWRITINGS HANSARDISING HANSARDIZING HARDSTANDING HEADBANGINGS HEADHUNTINGS HEARTRENDING HYDRASTININE HYDROPLANING INADAPTATION INADVERTENCE INADVERTENCY INCANDESCENT INCANDESCING INCARDINATED INCARDINATES INCARNADINED INCARNADINES INCENDIARIES INCENDIARISM INCIDENTALLY INCOMUNICADO INCOORDINATE INCRIMINATED INDECLINABLE INDECLINABLY INDEFINABLES INDENTATIONS INDICATIONAL INDIGNATIONS INDOCTRINATE INDOMETACINS INDOMETHACIN INDORSATIONS INFANTICIDAL INFANTICIDES INFANTILISED INFANTILIZED INFEUDATIONS INFLATEDNESS INFUNDIBULAR INORDINACIES INORDINATELY INORDINATION INSTANTIATED INTENDANCIES INTERCHAINED INTERCHANGED INTERDASHING INTERDEALING INTERGRADING INTERLARDING INTERMUNDANE INTERNALISED INTERNALIZED INTERPLANTED INTERSTRANDS INTERTANGLED INTIMIDATING INTIMIDATION INTRAMUNDANE INVALIDATING INVALIDATION INWARDNESSES KINDERGARTEN KNEEBOARDING LANDBOARDING LANDFILLINGS LANDGRAVINES LANDHOLDINGS LANDSCAPINGS LANDSKIPPING LONGITUDINAL MAIDENLINESS MAINTENANCED MANDARINATES MANDARINISMS MANDOLINISTS MANDUCATIONS MANIFOLDNESS MANSPREADING MEANDERINGLY MEDALLIONING MENDICANCIES MIDAFTERNOON MISCHANNELED MISDEMEANANT MISDEMEANING MISHANDLINGS MONOCARDIANS MONODELPHIAN MOUNTAINSIDE NATIONALISED NATIONALIZED NEONATICIDES NEOPAGANISED NEOPAGANIZED NIACINAMIDES NICOTINAMIDE NIDIFICATING NIDIFICATION NOMADISATION NOMADIZATION NONACADEMICS NONACTIVATED NONADDICTIVE NONADDITIVES NONADIABATIC NONADMISSION NONCANDIDACY NONCANDIDATE NONCUSTODIAL NONDEMANDING NONDIABETICS NONEDITORIAL NONEDUCATION NONIDENTICAL NONIRRIGATED NONLADDERING NONRAILROADS NONSTEROIDAL NORADRENALIN NULLIFIDIANS NURSEMAIDING OLEANDOMYCIN ONEIRODYNIAS ORDINARINESS OVERDOMINANT OVERHANDLING OVERSTANDING PANDAEMONIUM PANDEMONIANS PANDEMONIUMS PARASCENDING PASQUINADING PATHFINDINGS PENINSULATED PENTACRINOID PENTAMIDINES PENTLANDITES PHILANDERING PHYTONADIONE PINNATIFIDLY PINNIPEDIANS PONDERANCIES PONDERATIONS PREDOMINANCE PREDOMINANCY PREHARDENING PRENOMINATED PREORDAINING PREORDINANCE PUMPHANDLING PYCNOCONIDIA QUADRENNIALS QUADRENNIUMS QUADRIENNIAL QUADRIENNIUM QUINDECAGONS QUINQUENNIAD RANCIDNESSES RANGEFINDERS RANGEFINDING REDUNDANCIES REFOUNDATION REINCARNATED REINNERVATED RELAUNDERING REMAINDERING REMAINDERMAN REMAINDERMEN REORDINATION REPRIMANDING RESPONDENTIA ROPEDANCINGS SALAMANDRIAN SALAMANDRINE SANDBLASTING SANDPAINTING SANDPAPERING SCANDALISING SCANDALIZING SCINCOIDIANS SEMIDOMINANT SINDONOPHANY SNOWBLADINGS SNOWBOARDING SQUANDERINGS STEPDANCINGS SUBDOMINANTS SUBORDINANCY SYNDICATIONS TENDENCIALLY TENDENTIALLY TENDINOPATHY TRAGEDIENNES TRANSCENDING TRANSDUCTION TRANSITIONED TRANSUDATION TYRANNICIDAL TYRANNICIDES UNACQUAINTED UNADMONISHED UNASCENDIBLE UNBIASEDNESS UNCANDIDNESS UNDERACTIONS UNDERBEARING UNDERCOATING UNDERDRAINED UNDERDRAWING UNDERHANDING UNDERHEATING UNDERLAPPING UNDERLEASING UNDERLOADING UNDERMANNING UNDERMEANING UNDERPASSION UNDERPLAYING UNDERSEALING UNDERSTATING UNDERTAKINGS UNDERVALUING UNDESIGNATED UNDESPAIRING UNDISCORDANT UNDISMANTLED UNDRINKABLES UNDULATINGLY UNFADINGNESS UNFRANCHISED UNGERMINATED UNINHABITEDS UNINOCULATED UNINTEGRATED UNMAINTAINED UNMECHANISED UNMECHANIZED UNMYELINATED UNNILQUADIUM UNORIGINATED UNPARADISING UNPATRONISED UNPATRONIZED UNPAVILIONED UNQUANTIFIED UNRESTRAINED UNSANCTIFIED UNSANCTIONED UNSEMINARIED UNSTEADINESS UNTERMINATED UNVACCINATED UNVANQUISHED UNVENTILATED VACATIONLAND VENDITATIONS VINDEMIATING VINDICATIONS VINYLCYANIDE WINDJAMMINGS WINDLOADINGS WITHSTANDING