Pyramid words

Below is a list of pyramid words that are 7 or 8 letters in length. Pyramid words are words 4 letters long that extend to words of 7 or 8 letters long. For example the word SWATHERS: SWATHER is correct, SWATHE is correct, SWATH is correct and SWAT is correct.

 ABASERS  ABIDERS  AMENDED  AMENDERS AMENDES  AMENTAL  AMIDOLS 
 AMUSERS  ANTARAS  ANTICKE  ANTICKED ANTICKS  ARTISTES ARTISTS 
 BALSAMS  BALSAMY  BANDARIS BANDARS  BANIANS  BARBELLS BARBELS 
 BARBERS  BARBETS  BASSEST  BASSETS  BASSETTS BASTERS  BATHERS 
 BATTUES  BEARERS  BECKETS  BEDELLS  BESTIRS  BILLYOHS BILLYOS 
 BINGERS  BIRLERS  BITTERNS BITTERS  BLADERS  BLAMERS  BLOWSED 
 BLOWSES  BOMBERS  BOONGAS  BOORDES  BORDELS  BORDERS  BOREENS 
 BOWSERS  BOWSEYS  BREESES  BREESTS  BREISTS  BRINERS  BROOSES 
 BROWSED  BROWSERS BROWSES  BROWSTS  BRUTERS  BUBALES  BUFFERS 
 BUFFETS  BURKERS  BURROWS  BURSARS  BURSARY  BUSTICS  BUTTERS 
 BUTTERY  CABALAS  CALLANS  CALLANTS CALPACKS CALPACS  CAMESES 
 CANTONS  CANTORS  CAPOTES  CARBONS  CARBOYS  CARDIACS CARDIAE 
 CARDIAS  CARDIES  CARLESS  CARSEYS  CARTELS  CARTERS  CASTERS 
 CAVERNS  CELLARS  CELLOSES CENSERS  CENTUMS  CESSERS  CHADORS 
 CHAINED  CHAINES  CHAISES  CHAPELS  CHAPESS  CHARETS  CHARKAS 
 CHARROS  CHARTAS  CHASERS  CHIASMAL CHIASMAS CHIASMIC CHIASMS 
 CHICHAS  CHICHIS  CHICONS  CHIDERS  CHINARS  CHINESE  CHOCKOS 
 CHOWSED  CHOWSES  CLONERS  CLOTHED  CLOTHES  COATEES  COATERS 
 COHOSTS  COMBERS  COMMONS  COMMOTES COMMOTS  COMPOSED COMPOSER 
 COMPOSES COMPOSTS COMPOTES COMPOTS  CONDOMS  CONDORS  CONINES 
 CONNERS  COOMBES  CORNUAL  CORSETS  CORSEYS  COSECHS  COSTALS 
 COSTARDS COSTARS  COSTERS  COTTARS  COUPEES  COUPERS  COURSED 
 COURSERS COURSES  COVENTS  COVERTS  CRAMESY  CREESED  CREESES 
 CREESHY  CREWELS  CRUDEST  CRUSETS  CRUSTAE  CRUSTAL  CURSERS 
 DALEDHS  DARGAHS  DAUBERS  DAUBERY  DEAREST  DELISTS  DIKASTS 
 DINEROS  DINGERS  DINGEYS  DIVERSED DIVERSES DIVERTS  DIVESTS 
 DOOLEES  DORSALS  DORSELS  DORSERS  DOUCETS  DOURAHS  DOWSERS 
 DOWSETS  DRAPERS  DRAPERY  DRAPETS  DROWNDS  DROWSED  DROWSES 
 DUETTOS  DURESSES ERASERS  EXPOSED  EXPOSERS EXPOSES  FACETED 
 FAINEST  FASTIES  FAVELAS  FAVELLAS FEARERS  FELLAHS  FESTALS 
 FILLERS  FILLETS  FILMISH  FITTERS  FITTEST  FLAKERS  FLAMENS 
 FLAMERS  FLEXORS  FLORALS  FONDUED  FONDUES  FORESTS  FORMERS 
 FOULEST  FRATERS  FRATERY  FRISEES  FRISKAS  FRIZERS  FROWSTS 
 FROWSTY  FUNDIES  GAFFERS  GAMBETS  GAMBOLS  GINGERS  GINGERY 
 GLIDERS  GLOBING  GLOBINS  GLUTENS  GODSONS  GOOSEYS  GRADERS 
 GRAMASH  GRAMPAS  GRANDEES GRANDER  GRATERS  GRAVELS  GRAVELY 
 GRAVERS  GRAVEST  GREESES  GREETED  GREETERS GREETES  GRIPERS 
 GRUMPHS  GRUMPHY  GUANASES GUANAYS  GUIDERS  HAIRSTS  HALLOAS 
 HALLOOS  HALLOTH  HALLOWS  HASTENS  HAWSERS  HEARERS  HEARSED 
 HEARSES  HEARTHS  HEFTERS  HIGHTHS  HILLOAS  HINGERS  HOARSENS 
 HOARSER  HONESTY  HOOKAHS  HORSTES  HULLOAS  HULLOOS  HUMANER 
 IAMBICS  IRONERS  JAMBEES  JAMBERS  JAMBOKS  JAMBULS  JASPERS 
 JASPERY  KAIKAIS  KAINGAS  KARATES  KERNELS  KINASES  KNOWERS 
 KORUNAS  LAMEDHS  LANDERS  LAPSERS  LASSIES  LATENTS  LATHEES 
 LATHERS  LATHERY  LEASERS  LENTILS  LENTORS  LINGAMS  LINGOTS 
 LITHEST  LIVEDOS  LOCALES  LONGANS  LONGERS  LONGEST  LOOFAHS 
 LOOSENS  LOOSEST  LOUSERS  LOWNESS  LOWSEST  LUNGEES  LUNGERS 
 LUNGIES  MACHERS  MAILERS  MALICED  MALICES  MALISMS  MANATIS 
 MANDIRAS MANDIRS  MANGALS  MANGELS  MANGERS  MANIACS  MATTERS 
 MATTERY  MAXIMALS MEANERS  MEANEST  MEATHES  MENTORS  MERELLS 
 MERISMS  METHODS  MICHERS  MILLERS  MILLETS  MILORDS  MINGERS 
 MINIMALS MINIMAX  MISERES  MISSALS  MISSAYS  MODERNER MODERNES 
 MODERNS  MODESTY  MOLESTS  MOLLAHS  MONGOES  MONGOLS  MOOLAHS 
 MORALES  MORALLS  MORALLY  MORASSY  MORSELS  MOTETTS  MOUSERS 
 MOUSERY  MUGGARS  MULLAHS  MURRAMS  MURRAYS  MURREES  MURRENS 
 MURREYS  MURRINE  MURRINS  MUSSELS  MUTISMS  NARCOSES NOMADES 
 NORMALS  NORMANS  NULLAHS  NURSERS  NURSERY  OCTANES  OCTANTS 
 OPPOSED  OPPOSERS OPPOSES  PAIREST  PAISANAS PAISANOS PAISANS 
 PALLAHS  PANDARS  PANTONS  PARKIER  PARKIEST PARKINGS PARKINS 
 PARKISH  PARRALS  PARSECS  PARSERS  PASSELS  PASSERS  PASTELS 
 PASTERNS PASTERS  PATENTS  PATERAE  PECKERS  PEEPERS  PELTASTS 
 PHONERS  PHONEYS  PHONONS  PHOTOGS  PHOTONS  PILAFFS  PLANERS 
 PLANETS  PLANTAE  PLANTAR  PLANTAS  PLATENS  PLATERS  PLEASED 
 PLEASERS PLEASES  POISERS  POLEYNS  POLYPEDS POLYPES  POORISH 
 PORTALS  POSSERS  POSSESS  POSSETS  POUFFED  POUFFES  PRATERS 
 PRIMEROS PRIMERS  PROBERS  PROSERS  PULSERS  PUNKAHS  PURINES 
 PURISMS  PURISTS  PURSERS  PURSEWS  PUTTIED  PUTTIERS PUTTIES 
 QUINOAS  QUINOLS  QUINTALS QUINTANS QUINTARS QUINTAS  QUINTES 
 QUINTETS QUINTETT RACHETS  RAILERS  RAISERS  RANGERS  RANKERS 
 RANKEST  RATOONS  REAMERS  REEDERS  RENTERS  REPOSED  REPOSERS 
 REPOSES  REPOSTS  RETESTS  RILLETS  RINSERS  ROMANOS  ROOSERS 
 ROUTERS  SADISMS  SADISTS  SALLEES  SALLETS  SAMEKHS  SANGARS 
 SANSARS  SANTOLS  SANTONS  SCAMPISH SCARERS  SCARPAS  SCARPHS 
 SCARTHS  SCATHED  SCATHES  SCULLED  SCULLERS SCULLERY SCULLES 
 SCULPTS  SEAMERS  SEISERS  SELLERS  SENSEIS  SENSISMS SENSISTS 
 SERAILS  SERRANOS SERRANS  SEXTONS  SHADERS  SHAMANS  SHAMERS 
 SHINERS  SHINESS  SHIRRAS  SHIVAHS  SHIVERS  SHIVERY  SHOOLED 
 SHOOLES  SHOTTED  SHOTTEN  SHOTTES  SIGNALS  SILENES  SILENTS 
 SINGERS  SITHENS  SKATERS  SLATERS  SLIDERS  SLOPERS  SMITERS 
 SNARERS  SNIPERS  SOARERS  SOLANDS  SOLANOS  SOLDERS  SOLERAS 
 SOOTHED  SOOTHERS SOOTHEST SORDORS  SORELLS  SORTALS  SOURSES 
 SPARERS  SPAREST  SPARKED  SPARKERS SPARKES  SPARSER  SPARTHES 
 SPARTHS  SPICERS  SPICERY  SPIKERS  SPIKERY  SPINALS  SPINARS 
 SPINELS  SPINETS  SPURNED  SPURNERS SPURNES  STAGERS  STAGERY 
 STARERS  STARTSY  STATERS  STEDDED  STEDDES  STOPERS  STOWNDS 
 SUITERS  SUNNAHS  SWAGERS  SWATHED  SWATHERS SWATHES  TAKINGS 
 TANGIER  TANGIEST TAPETAL  TAPETIS  TARSIAS  TASSELLS TASSELLY 
 TASSELS  TASSETS  TEASELS  TEASERS  TEENERS  TELESMS  TENSEST 
 TESTEES  TESTERNS TESTERS  THANAHS  THROWERS THROWES  TOILERS 
 TOILETS  TOLANES  TOLEDOS  TORANAS  TORSELS  TOWSERS  TRADERS 
 TRIGONS  TRIOSES  TUFFETS  TWINERS  UNCIALS  UNDERNS  UNITERS 
 UPTAKEN  UPTAKES  UREASES  VALETAS  VALETED  VALETES  VALISES 
 VARECHS  VEALERS  VERSERS  VERSETS  VERSTES  VERTUES  VESTALS 
 VILLANS  VILLANY  WACKERS  WACKEST  WAITERS  WALISES  WALLAHS 
 WASTELS  WASTERS  WASTERY  WEIRDOS  WHINERS  WHITENS  WHITEST 
 WHITEYS  WINGERS  WITHERS  WIVERNS  WOOSELLS WOOSELS  WRITERS 
 YOGINIS  YOGISMS  ZILLAHS    
      

There are also the backward pyramid words (eg AEMULES ES is a word, LES is a word, MULES is a word, EMULES is a word and AEMULES is a word).

ABASHES  AEMULES  AFEARED  ANEARED  ASCARED  ASLAKED  ASTRIDE 
AURATES  BANANAS  BLASHES  BLEARED  BLOOPED  BORATES  BRASHES 
CHAIRED  CLASHES  CLEARED  CRASHES  CURARES  CURATES  DELOPED 
DELOPES  DEMURES  DROOPED  ESCAPED  ESCAPES  FLASHES  GESTATES 
GLAIRED  GLOOPED  HAMATES  KNISHES  LEMURES  MANANAS  PENATES 
PRELATE  PRETAPES PSHAWED  RESTATE  RESTATES SCOOPED  SCRAPED 
SCRAPES  SENATES  SHASHES  SLASHES  SMASHES  SOBOLES  SPLASHES 
STABLED  STASHES  STEARED  STROWED  SWASHES  SWISHES  TESTATES 
TRASHES  TROOPED  UNEARED  UPRATES  UPREACH  VACATES  WHISHES 
WHOOPED  YSLAKED  ZANANAS

Based on lists prepared by Michael McKenna.