8 letters

clangbox ∙ Lunchbox ∙ Matchbox ∙ patchbox watchbox ∙ touchbox Slushbox sneakbox clackbox ∙ wheelbox spillbox Brainbox ∙ homeobox ∙ econobox ∙ stompbox underbox ColorBox sweatbox ∙ lightbox paintbox ∙ CompuBox orthodox ∙ philodox Alphamox Grunamox Hidramox Supramox Bactamox Bintamox Servamox Respimox Draximox Cabermox Intermox Trisenox Swinepox ∙ horsepox ∙ Mousepox whitepox Camelpox smallpox ∙ Scrumpox ∙ Orthopox waterpox ∙ Synthrox Euthyrox gobiesox bobbysox ∙ jambeaux ∙ rinceaux ponceaux ∙ berceaux ∙ morceaux ∙ bandeaux ∙ rondeaux ∙ Bordeaux ∙ Tableaux ∙ rouleaux ∙ trumeaux ∙ cheneaux tonneaux ∙ chapeaux ∙ chateaux ∙ plateaux ∙ salteaux manteaux ∙ torteaux batteaux ∙ couteaux ∙ nouveaux ∙ fabliaux ∙ giambeux ∙ Changeux camaieux ∙ precieux ∙ Moelleux chedreux Montreux mortreux Mousseux Capiteux Fougueux Chapelux antiflux millilux ∙ clavilux microlux ∙ saindoux Cerambyx epicalyx ∙ Sardonyx ∙ perionyx Jasponyx Baryonyx dipteryx leucoryx oreortyx

9 letters

inefficax bureaufax obatoclax gravadlax ∙ overrelax Xtoadflax earthflax ∙ myeloplax Gonyaulax nauphylax Subclimax ∙ preclimax proclimax Disclimax ∙ Endolimax Somatomax Oreopanax Kalopanax empidonax oxylabrax synthorax prothorax ∙ urothorax pyothorax scramasax Milledwax Guabancex autoindex Dorsiflex ∙ retroflex ∙ introflex prepollex ∙ proscolex nulliplex multiplex ∙ decemplex decomplex ∙ incomplex uncomplex helioplex phonoplex metroplex ∙ reperplex unperplex ∙ sextuplex lincompex syncompex Benzedrex Middlesex heterosex subcortex ∙ epicortex neocortex ∙ isocortex suffrutex subconvex circumfix minihelix antihelix ∙ degarelix ganirelix pompholix nonprolix spondulix ∙ Chamounix endothrix lagothrix leiothrix thiothrix calothrix lepothrix ectothrix Turbatrix evocatrix piscatrix ∙ Fundatrix mediatrix ∙ Bellatrix fellatrix ∙ submatrix ∙ operatrix narratrix bersatrix dictatrix ∙ agitatrix imitatrix testatrix ∙ Directrix ∙ bisectrix ∙ Obstetrix creditrix servitrix promotrix assertrix impostrix Executrix ∙ uromastix Phenistix Clinistix candlebox Gogglebox ∙ rattlebox ∙ Cheesebox strongbox ∙ Switchbox homoeobox ∙ Thermobox Pillarbox tinderbox ∙ tuckerbox ∙ pepperbox ∙ Letterbox ∙ butterbox thriftbox shadowbox ∙ unparadox pseudodox heterodox ∙ podofilox Triafamox Simplamox Bristamox Saltermox amlexanox pigeonpox cottonpox monkeypox Levotirox appomatox Thibodaux flambeaux ∙ aboideaux ∙ boisseaux aboiteaux ∙ capiteaux Maroteaux Ordronaux entredeux priedieux ∙ religieux ∙ Chartreux Magnaflux retroflux superflux ∙ interflux transflux prehallux ∙ arquifoux geococcyx gonocalyx Glycoalyx pompholyx ∙ Scipionyx megalonyx lophortyx

10 letters

navitoclax trichoplax nomophylax anticlimax ∙ postclimax tetrapanax Altispinax trithrinax cacanthrax xylanthrax nycticorax hemathorax metathorax ∙ medithorax hemithorax endothorax oleothorax hemothorax mesothorax ∙ entothorax esonarthex exonarthex Dystraflex semireflex idioreflex baroreflex vasoreflex circumflex ∙ Letterflex petrosilex contraplex ∙ launchplex Googolplex ∙ noncomplex ∙ phantoplex semiduplex quadruplex ∙ divalproex notiosorex microsorex Rheumatrex paracortex endocortex allocortex equiconvex antispadix counterfix superhelix ∙ daemonelix cetrorelix overprolix Printronix spinturnix callithrix cladothrix Ophiothrix poliothrix crenothrix rhinothrix clonothrix Microthrix Sporothrix Leptothrix indicatrix advocatrix balneatrix gladiatrix initiatrix ∙ osculatrix cytomatrix dominatrix ∙ nominatrix separatrix ∙ quadratrix ∙ liberatrix moderatrix ∙ generatrix ∙ imperatrix accusatrix spectatrix ∙ projectrix inspectrix trisectrix ∙ protectrix ∙ solicitrix admonitrix inheritrix ∙ precentrix ∙ coadjutrix ∙ theomastix paracervix endocervix ectocervix Criosphinx Anrosphinx optomeninx otosalpinx myosalpinx pyosalpinx epipharynx oropharynx ∙ prattlebox ∙ Thunderbox ∙ chatterbox ∙ unorthodox ∙ Kerflummox chickenpox ∙ ciclopirox groundprox ∙ Berlthyrox Levothyrox scombresox Appomattox chalumeaux ∙ bordereaux ∙ gaspereaux ∙ subbureaux ∙ trousseaux ∙ kristinaux Eurometaux clarenceux Lefaucheux Délicieux merveileux Dechaineux Périgueux praehallux maquechoux glycocalyx nectocalyx ∙ palapteryx

11 letters

siphonoplax electroplax pentaphylax sceuophylax ∙ hyperclimax echinopanax lithanthrax antianthrax planithorax cholothorax chylothorax Haemothorax stenothorax urinothorax Gymnothorax fibrothorax microthorax hydrothorax ∙ pterothorax Gerrothorax vaporthorax dendrohyrax Pterostyrax photosyntax thoroughwax ∙ Hypopharyax multireflex chemoreflex fressreflex desmoscolex Protoscolex deutoscolex cerviciplex demultiplex anticomplex overcomplex ∙ iridomyrmex archicortex paleocortex koniocortex planoconvex galloperdix pseudolarix monilethrix sclerothrix chrysothrix clastothrix fornicatrix procreatrix instigatrix objurgatrix negotiatrix ∙ consolatrix ∙ legislatrix translatrix bucculatrix speculatrix ∙ stimulatrix gubernatrix autocratrix inspiratrix arbitratrix ∙ procuratrix Incantatrix captivatrix benefactrix proprietrix ∙ expenditrix progenitrix ∙ inquisitrix competitrix liferentrix prosecutrix ∙ persecutrix coexecutrix ∙ prolocutrix ∙ institutrix Chilomastix pediphalanx maniphalanx androsphinx ∙ leptomeninx pachymeninx perisalpinx endosalpinx hemosalpinx Hyposalpinx mesosalpinx archosyrinx sialosyrinx mastosyrinx cystosyrinx hypopharynx ∙ nasopharynx ∙ cytopharynx eurypharynx nonorthodox ∙ neoorthodox ∙ deferasirox Chenonceaux fricandeaux ∙ knisteneaux cristineaux mantappeaux cryptoglaux clarencieux carbonnieux merveilleux ∙ counterflux sacrococcyx nematocalyx chalcedonyx ∙ dicrostonyx micropteryx

12 letters

chartophylax trophothylax plagioclimax ∙

Words with a ∙ are valid Scrabble words (SOWPODS word list)