There are 10 A's in the Massachusetts lake name CHARGOGGAGOGGMANCHAUGGAUGGAGOGGCHAUBUNAGUNGAMAUGG.
There are 9 A's in AQUAETHYLENEDIAMINETETRAACETATOMANGANATE (DIC).
There are 6 A's in TARAMASALATA, PALAEACANTHOCEPHALA, TATHAGATAGARBHA, TARANTARRATARA (the sound of a bugle or drum, OED), and ADAMANTOBLASTOMATA. There are also 6 A's in ASTRAGALOCALCANEAL and CALCANEOASTRAGALAR although the status of these words is uncertain.
There are six B's in HUBBUBBUBBOO (OED2).
There are four B's in BUBBYBUSH (W3), BEBLUBBERED, FLIBBERTIGIBBET, BUBBLEABLE (OED2), SCRIBBLEDEHOBBLE (OED2), UBBUBBOO (OED2), and BIBLIOBIBULI (a word coined by H. L. Mencken which means "people who read too much and so are generally oblivious to the world around them").
There are 6 C's in CHOLANGIOCHOLECYSTOCHOLEDOCHECTOMY (IDMB), PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS, and CLACK-CLACK-CLACK (OED).
There are 5 C's in COCCOCHROMATIC (W2), CIRCUMCRESCENCE (W3), MICROCOCCACEAE (a type of bacteria), SACCHAROCOCCUS (a type of bacteria), CHROOCOCCACEAE (the family of blue-green algae), CHROOCOCCACEOUS, and ECHINOCOCCIC.
There are 4 C's in BECCACCIA, BOCCACCIO, CACHECTIC, CONCYCLIC, GONOCOCCIC, MICROCOCCI, SCACCHIC (of or pertaining to chess), and COCCIC [RHUD].
There are 5 D's in DISDODECAHEDROID (W3), DODECAHEMIDODECAHEDRON, DODECICOSIDODECAHEDRON, and DUNDERHEADEDEDNESS.
There are 4 D's in CONDIDDLED, DADDED, DIDDERED, DODDED, DADDLED, DIDDLED, DODDARD, DODDERED, DEADHEADED, DISBUDDED, DOGSLEDDED, DUNDERHEADED, GRANDDADDY, MUDDLEHEADED, SKEDADDLED, WOODSHEDDED, DENDRODENDRITIC.
There are 9 E's in DIHYDROXYBENZENEHEXAMETHYLENETETRAMINE (GHCD).
There are 8 E's in PEEKEENEENEE (OED).
There are 7 E's in ETHYLENEDIAMINETETRAACETATE (MWCD10). There are also 7 E's in ELECTROTELETHERMOMETER. However, no actual use of this word has been found.
There are 6 E's in DEGENERESCENCE, STEREOTELEMETER, FEEBLEHEARTEDNESS, HEXAMETHYLENETETRAMINE, and BEEVEEDEE (men's underwear, OED).
There are 4 F's in RIFFRAFF, NIFFNAFF, CHIFFCHAFF,GIFFGAFF (mutual accommodation, mutual giving - W2), COEFFEFFE (OED2), and FURIFUFF (OED2).
There are 17 G's in the Massachusetts lake name CHARGOGGAGOGGMANCHAUGGAUGGAGOGGCHAUBUNAGUNGAMAUGG.
There are 5 G's in HIGGLEHAGGLING (W3) and HUGGERMUGGERING.
There are 4 G's in GAGGING, GIGGING, GAGGLING, GIGGLING, GLUGGING, GOGGLING, GUGGLING, AGGREGATING, CHUGALUGGING, DOGLEGGING, WIGWAGGING, ZIGZAGGING, AGGREGING, DISAGGREGATING, and GANGGANG.
There are 8 H's in DIPHENYLDIPHENYLPHOSPHINOTHIOYLMETHYLPHOSPHINE (DOC). (The -thioyl- part of the spelling may be incorrect.)
There are 4 H's in DICHLORODIPHENYLTRICHLOROETHANE, PHENOLSULPHONPHTHALEIN, PHOSPHORIBOSYLPYROPHOSPHATE, PHTHALYLSULPHATHIAZOLE, ICHTHYOPHTHIRA (a crustaceous fish parasite), DINAPHTHOTHIOPHENE (a derivative of coal tar used in moth balls), ICHTHYOPHTHALMITE (a mineral: apophyllite), ICHTHYOPHTHIRIUS (a genus of fish parasite), RHAMPHORHYNCHID, RHAMPHORHYNCHUS (a genus of pterodactyls), and OPHTHALMOPHTHISIS (abnormal softness of the eye - Dorland's Medical Dictionary). These words appear in the OED2: CHROMOPHOTOLITHOGRAPH, HEILSGESCHICHTLICH, METHYLTRIETHYLPHOSPHONIUM, PHOTOPHOBOPHTHALMIA, SHAHANSHAH, TRIETHYLSULPHONEMETHYLMETHANE, and WHHI-HHEE.
There are 9 I's in FLOCCINAUCINIHILIPILIFICATION.
There are 8 I's in DISINDIVISIBILITIES (OED).
There are 7 I's in INDIVISIBILITIES, INDISTINGUISHABILITIES, and SUPERCALIFRAGILISTICEXPIALIDOCIOUS.
There are 6 I's in INDIVISIBILITY, MINIMIFIDIANISM (OED2), IMPOSSIBILIFICATION, INDISTINGUISHABILITY, HISTOINCOMPATIBILITIES, PERICARDIOMEDIASTINITIS, DIRIGIBILITIES, DISCRIMINABILITIES, DISTINGUISHABILITIES, DIVISIBILITIES, IGNITIBILITIES, IMMISCIBILITIES, INDISCERNIBILITIES, INDISCERPTIBILITIES, INDISTINGUISHABILITY, INELIGIBILITIES, INFINITESIMALITIES, and INVISIBILITIES.
There are 4 J's in JEJUNOJEJUNOSTOMY.
There are 4 K's in KAKKAK (a small bittern of Guam - W3), KUKUKUKU (tribespeople of New Guinea), KNICKKNACK (W3), KUKUMAKRANKA, KAKKERLAK (OED2), and KVIKKALKUL (a Swedish programming language).
There are 11 L's in the Welsh city LLANFAIRPWLLGWYNGYLLGOGERYCHWYRNDROBWLLLLANTYSILIOGOGOGOCH. An alternate spelling changes the -TYSILIO- to -DYSILIO-: LLANFAIRPWLLGWYNGYLLGOGERYCHWYRNDROBWLLLLANDYSILIOGOGOGOCH which still has eleven L's.
There are 6 L's in ACYLHALOGENALKYL(ALPHYL)AMINE and LLULLAILLACO (a volcano in North Chile).
There are 5 L's in ALLOPLASTICALLY (W3), LILLIBULLERO, POLYSYLLABICALLY, ALLOCHLOROPHYLL, ALLOPLASTICALLY, and LILLYPILLY. The OED2 has INTELLECTUALISTICALLY, PALEOCLIMATOLOGICALLY, and POLYSYLLABILINGUAL.
There are 9 M's in DIMETHYLAMINOMETHYLENEAMINOMETHYLENEDIMETHYLAMMONIUM (DOC).
There are 5 M's in AMMOPALLADAMMONIUM and FORMALDEHYDETETRAMETHYLAMIDOFLUORIMUM.
There are 4 M's in MUMMYDOM (W3), MAMMIFORM, MAMMONISM, MUMMIFORM, MOHAMMEDISM, IMMUNOCOMPROMISED, MESEMBRYANTHEMUM, MAMMECTOMY, MULTIMAMMATE, and MAMMOGRAM.
There are 6 N's in NONANNOUNCEMENT (W2), ONNFANNGENN, and UNNBIGUNNEN (OED).
There are 5 N's in INCONVENIENCING, NONCONFINING, NONDENOMINATIONAL, NONINTERVENTION, NANNOPLANKTON, NONTANNIN, NOVEMNONAGINTILLION (10300), and NONWINNING, FENNOSCANDINAVIAN, INCONTINENTNESS, INCONVENIENTNESS, NONGAINSTANDING, SHENANIGANNING, TENNYSONIANNESS, UNCONTENTINGNESS, UNCUNNINGNESS, and UNINCONVENIENCED.
There are 9 O's in PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS (W3 and OED2) and DICHLOROISOTHIOCYANATOOXOPHOSPHORUS (a highly reactive liquid - DIC).
There are 8 O's in TOOMATOOGOOROO (a spiny New Zealand shrub, OED) and WOOLLOOMOOLOO (a place in New South Wales, Australia)
There are 7 O's in CHOLANGIOCHOLECYSTOCHOLEDOCHECTOMY and CHRONONHOTONTHOLOGOS (Roget's).
There are 6 O's in MONOGONOPOROUS, ODONTONOSOLOGY, PROCTOCOLONOSCOPY, DUODENOCHOLEDOCHOTOMY, CHOLEDOCHODUODENOSTOMY, PSEUDOMONOCOTYLEDONOUS, ZOOLOGICOARCHAEOLOGIST, BROMOCHLORODIFLUOROMETHANE, HYDROCHLOROFLUOROCARBON, PHOTOGEOMORPHOLOGY, COOSCOOSOO (OED2), KOOSKOOSOO (OED2), and ROOCOOCOO (a pigeon noise, OED).
There are 5 P's in PHOSPHORIBOSYLPYROPHOSPHATE.
There are 4 P's in WHIPPERSNAPPER, HAPLOPAPPUS, PENTAPOPEMPTIC, POLYAPOPEMPTIC, SNIPPERSNAPPER, APLOPAPPUS, UPPOPPED (W2), and UPPROPPED [SOWPODS]. The OED2 has PARAHIPPOCAMPAL, POSTHIPPOCAMPAL, SLIPPERSLAPPER, STIFFUPPERLIPPISHNESS, and SUPRAOPTICOHYPOPHYSIAL.
There are 4 Q's in QAWIQSAQQ (an Alaskan bluff).
There are 3 Q's in QARAQALPAQ (W3), QUINQUESQUAMATA (a species of rubberweed plant of southwest USA), QAQAQ (an insular hill surrounded by glacial ice in Greenland, Word Ways), QUATTUORQUINQUAGINTILLION (a name for 10165 in the American system), and QUINQUINQUAGINTILLION (10168). Allowing proper nouns, the following place names in Greenland have 3 Q's: QEQERTARSUAQ, TUTTOQQORTOOQ, QAQORTOQ, QEQERTAQ [1000 miles north of QAQORTOQ], QOOQQUT, and SAQQAQ. There are also 3 Q's in OQSUQTOOQ (in the Canadian territory of Nunavut).
There are 2 Q's in EQUIVOQUE, QUINQUINA, ALBUQUERQUE, QUINQUAGESIMA, QUINQUENNIA, QUINQUEREME, QUINQUENNIAL, QUAQUAVERSAL, QUASQUECENTENNIAL, QUINQUAGENARIAN, QUINQUENNIUM, QUINQUESECTION, QUISQUILIOUS, QUISQUOS, SESQUIQUADRATE, QWAQWA (a national state or non-independent black homeland in South Africa), QUATTUORQUADRAGINTILLION, QUINQUADRAGINTILLION, QUINQUAGINTILLION, QUINQUEVALENT, and KANGIQSLINIQ and QAUSUITTUQ (both are places in the Canadian territory of Nunavut).
Bruce D. Wilner points out that HABAKKUK (a book of the Bible) could be transliterated HABAQQUQ (with 3 Q's). This transliteration requires qoph to be transliterated Q rather than K; there are two qophs in the word but the first one has a dagesh which effectively doubles the consonant.
There are 5 R's in FERRIPROTOPORPHYRIN (W3), REREFERRER, FERROPROTOPORPHYRIN, and TRANSURETEROURETEROSTOMY.
There are 4 R's in CHIRURGERAR, EXTRACURRICULAR, FURRURER, SURRENDERER, TERRORIZER, TRANSFERRER, REFERRER, ARCHTREASURER, ARMOURBEARER, EXTRATERRATORIAL, EXTRATERRESTRIAL, FORESPURRER, REFRIGERATOR.
There are 9 S's in POSSESSIONLESSNESSES (W3).
There are 8 S's in STRESSLESSNESSES.
There are 7 S's in CLASSLESSNESSES, EXPRESSIONLESSNESSES, POSSESSEDNESSES, POSSESSIVENESSES, RESISTLESSNESSES, SENSELESSNESSES, STRESSLESSNESS, and SUCCESSLESSNESS.
There are 6 T's in these OED2 words: UNTITTLETATTLING, RATTATATTATORY, and TATTARRATTAT.
The rec.puzzle archive shows 6 T's in TETRASUBSTITUTEDEST.
There are 5 T's in TRANSUBSTANTIATIONALIST, TOTIPOTENTIALITY, ANTICONSTITUTIONALIST, ETHYLENEDIAMINETETRAACETATE, THROTTLEBOTTOM [rec.puzz], YTTROTANTALITE, TETARTOSYSTEMATIC, YTTROTITANITE, and YTTROTUNGSTITE.
There are 9 U's in HUMUHUMUNUKUNUKUAPUAA (a triggerfish - RHUD2).
There are 5 U's in UNTUMULTUOUS, TUGULUSAURUS (Cretaceous dinosaur from China), URUGUAYSUCHUS (an extinct crocodile from South America), and PURUSUSAURUS (fossil Amazonian crocodile).
There are 4 U's in SUCURUJU (anaconda), SURUCUCU (venomous snake of Guinea), MUUMUUS (loose Hawaiian dresses) [all SOWPODS], UNUNUNIUM (a name for Elemennt 111), UNUNQUADIUM (a name for Element 114), UNSCRUPULOUS, USUFRUCTUARY, and UNPRESUMPTUOUS.
There are 3 V's in VIVISECTIVE, OVOVIVIPAROUS, OVOVIVIPARITY, VIVIFICATIVE, VULVOVAGINITIS, OVERVIVID [SOWPODS], OVERCONSERVATIVE, EVVIVA (a shout of applause, OED), OVERVOLVE (OED2), and OVERINVOLVED.
There are 3 W's in BOWWOW, POWWOW, WILLIWAW, SWALLOWWORT, NEWWORLDWARD, WATERWAW, and WAYWOODWARE.
There are 4 X's in HEXAHYDROXYOXYHEXALEAD (DIC).
There are 3 X's in HEXAHYDROXYCYCLOHEXANE (Random House).
There are 2 X's in XEROX, MAXIXE, PAXWAX, XERXES, EXOTOXIC, EXOTOXIN, EXECUTRIX, SAXITOXIN, XANTHOXYL, AXOAXONAL, EXCITOTOXIN, and XANTHOTOXIN.
There are 7 Y's in GLYCYLGLYCYLGLYCYLGLYCINE, which is in DOC, and a legitimate use of which has been found on the Internet.
There are 5 Y's in POLYSYNBRACHYDACTYLY (a condition of multiple fused shortened digits - IDMB).
There are 4 Y's in DACRYOCYSTOSYRINGOTOMY (W3), DIMETHYLAMIDOPHENYLDIMETHYLPYRAZOLONE, HYDROXYPYRROLIDINECARBOXYLIC, HYDROXYMETHYLACYLFULVENE, POLYHYDROXYBUTYRATE, HYPERPOLYSYLLABICALLY, KYRYMYRY (OED), and ACROCEPHALOPOLYSYNDACTYLY.
There are 3 Y's in SYZYGY, HYPOGYNY, POLYGYNY, SYNONYMY, POLYONYMY, HYPERNYMY, HYPONYMY, POLYMYTHY, POLYTYPY, XYLOGLYPHY, and HYDROXYMETHYLCYTOSINE.
There are 6 Z's in ZENZIZENZIZENZIC (OED2).
There are 4 Z's in RAZZMATAZZ (W3), PIZZAZZ, PAZZAZZ, and